Purveyors of Electronic, Musical and Vintage goods from then, now and in between. 
Since 1982.

ATTENTION: IF YOU SOMEHOW STUMBLED ONTO THIS PAGE, IT IS NOT FOR PUBLIC CONSUMPTION, AND NONE OF THE INFORMATION INCLUDING PRICE IS RELEVANT.
IT IS OUR PAGE FOR TEMPORARY STORAGE OF "SOLD" ITEMS PRIOR TO ARCHIVING.



CLICK HERE FOR MAIN Hi-Fi PAGE


LINKS TO OUR 'HI-FI' DEPARTMENTS

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Pre-Amps

Receivers

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Decks

Tuners

Turntables

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Decks

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Processors

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THIS IS NOT THE SAME PAGE YOU JUST VIEWED. KEEP SCROLLING DOWN.

 


 

Jensen_System-300_Stereo_Speakers_web.jpg (29583 bytes)       Jensen_System-300_Stereo_Speakers_collage.jpg (206162 bytes)

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CheckMarkSmall_web.jpg (792 bytes) warranty
VINTAGE  
JENSEN

STEREO SPEAKERS

SYSTEM 300
Circa 1981-'85

Made in USA

CURRENTLY HELD FROM SALE

for sale

A bit short in the looks department, but long on sound.

We have completely tested them with both recorded material, PN 20-20k and swept them with our AF generator.
These Jensen "System 300" speakers are very accurate and impressive sounding.  Features:

- 9" woofer
- 1" cloth soft dome tweeter
- Acoustic Suspension cabinet design
- 8
Ω

Foam surround on 9" woofer in fine shape with years life left in it before it will need to be replaced. Medium-dark Oak wood grain vinyl wrap finish in decent shape with a few normal scuffs and dings. Nothing too  distracting from overall appearance (see photos). Original brown grills in fair shape as well with normal amount of snags for 15 years old and unfortunately the small plastic Jensen badges are missing. Grills also have minor, light colored staining on lower 1/3 of each. Speakers test and sound great. Each measures 23" high x 13" wide x 10" deep and weighs a 23 lbs unpacked. Includes our standard speaker warranty ( excluding problems due to under / over powering).
JENSEN SYSTEM 300
Condition 7.5

$239. pair

CURRENTLY HELD FROM SALE


 
 (Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)
 



   

NEW LISTING 5/9/19
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
RESTORED / REFURBISHED / FULLY SERVICED
VINTAGE MARANTZ STEREO RECEIVER / CASSETTE TAPE DECK
MARANTZ 4025 'CASSEIVER' (aka MCR-425)
AM/FM STEREO RECEIVER / CASSETTE DECK

#...0181
Circa 1978-80

SOLD 7/30/19
SHIPPING TO TIM IN TENNESSEE

  Our technician has completely gone through and 'Certified' this unit.

ü We have completely gone through this unit cleaning everything including all switches, controls and contacts. VERY time consuming to properly service this unit, especially the 8-track deck. Extensive cleaning of unit internally.

ü Internal fuses checked for continuity and correct values. No issues found, fortunately. We don't like seeing incorrect fuses having been installed in a unit as that could mean it had prior issues, or if a fuse value was 'increased' it could have allowed too much current through an 'ailing' circuit causing un-due / un-necessary damage.

ü Controls were 'flooded' w/ 'De-OxId' and are quiet

ü Entire transport was disassembled down to the chassis, and every mechanical part was cleaned of "varnished" lubes and re-lubed as well as the always at issue, Pinch Roller plunge assembly, re-lubed and reassembled (VERY DIFFICULT and TIME CONSUMING on this unit)

ü Main drive belt has been replaced with NEW for trouble free service (#42-1975 and counter belt replace with #030).

ü Capstan flywheel removed, cleaned, burnished and re-lubed prior to re-install. Entire transport and mechanism has been cleaned, re-lubed and de-magnetized.

ü Heads have been cleaned and de-magnetized and are in great shape.

ü Head alignment and azimuth at 125Hz, 1kHz and 10kHz adjusted for BOTH directions for 'peak performance' with O-Scope and w/ STL and TEAC MTT-257H calibration / alignment tapes. Both channels now even output.

ü Meters adjusted to even zero with symmetric with Volt meter, O-Scope and w/ STL and TEAC MTT-257H calibration / alignment tapes. Both channels now even output.

ü Both Internal playback amplifier channels adjusted with Volt meter, O-Scope and w/ STL and TEAC MTT-257H calibration / alignment tapes. Both channels now even output.

ü Meters adjusted to even zero with symmetric input with Volt meter, O-Scope and w/ STL and TEAC MTT-257H calibration / alignment tapes. Both channels now even output.

ü Both Internal Record amplifier channels adjusted with Volt meter, O-Scope and w/ STL and TEAC MTT-257H calibration / alignment tapes. Both channels now even output.

ü Record signal path contacts cleaned and burnished for static-free performance

ü Linear Record switch cleaned so no 'Motor Boating' effect

 
ü Internal playback, meter and record level pots also adjusted w/ O-scope.

ü Following refurbishment, Speed checked with factory test tape to 100% accuracy! (meaning in this case, that our 1000Hz test tape plays back at 1000Hz on our Freq Counter Meter)

ü Deck 'sonically' checked for WOW and Flutter with no appreciable issues

ü Record Meters adjusted for 'even' readout and performance

ü Pinch Roller replaced with new, as following initial transport overhaul, we found that occasionally, on certain tapes the original / old pinch roller would 'crinkle / wrinkle' the tape

ü Floor noise of receiver tested @-60dBm. Floor noise of cassette deck measured with 'blank' Fuji tape at 1.75mVAC.

ü Tuner string checked for any fraying then re-tensioned to increase traction & relieve flywheel binding and re-centered pointer to correct dial position.

ü We aligned the tuner front-end for optimum AM & FM performance as older internal tuner components have always drifted on vintage gear over the years. VERY GOOD TUNER! FM sounds fantastic. AM is decent as well.

ü All dial, indicator & meter lamps work or were replaced.

ü Stereo indicator lamp working

ü We also checked the heat sink compound which should be good for another 30 years.

ü All inputs tested and both side produces clean and even sine waves into 'brick-wall' 8 & 4 Ohm loads! No power supply hum of any kind. It's dead silent! All functions test fine.
Total restoration time investment 16+ hours.

ü Following restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 72 hours into a 4 Ohm load.

ü On our test bench, each internal amplifier of this particular unit, #...0181, produced peak power of 16 Volts per channel for 28 Watts per channel @ 8 Ohm and 13 Volts @ 4 Ohm for 42 Watts per channel @ 1khz from actual discrete output transistors (2x 2SA1060 and 2x 2SC2484) (ALL the other 'compacts' we were working on utilized STK power pack, which had some to do with why we couldn't resurrect many of them. The DC was just too high in many cases, and couldn't be rectified practically).
ü AC Idle current at <.35A, & floor noise-60dBm.
ü DC offset checked to <30mVDC / channel (VERY good for a 'compact' unit and as good or better than many separate components).
  ____________________________
  

So, as with anything you want to look up on the 'world wide interweb', you will find a myriad of opinions. Many of them are from folks who have never even personally experienced what they are 'spouting off' about. Well, of course, I have mine too, however, mine will be from someone who does have 'personal experience' with whatever I'm 'expounding' about, and is from 'real world' experiences, 'down in the trenches'. I often get a 'kick' out of what folks have to say (generally negative) about a piece of gear, with no actual, personal experience. Recently read so many opinions of a speaker we had just finished and were about to audition, prior to auditioning them, that I was not holding out much hope for their final performance. Not only was I surprised by their actual performance (in a positive way), they were completely the antithesis of what EVERY opinion on the web stated, with NONE of them ever actually hearing them (they all stated so in their opinions). Anyway, I'll climb down from my 'ivory tower' for a moment just to say that for what this is designed to be it really came out as a wonderful unit following it's 18+ hours of service to bring it back to essentially 'new' condition. Wonderful condition, and for a 'compact system' REALLY GREAT SOUNDING, late 70's, silver face 'Combo' Receiver from Marantz. We've had this for years, but just recently got around to restoring it. We had a few 'compacts' from brands such as Sony, Panasonic, Fisher, Marantz, but most did not pan out (didn't even attempt the 'cheeeeeese' from companies like Electrophonic, GE, Lloyds, Sound Design, Symphonic and a host of other 'bottom feeder' units.

It really is surprising in sonics, performance, feel and quality
. Great performance for a 'small to mid-sized' 2-Channel audio system. This is the only the second or third 'compact' to 'pass muster' in the past couple decades (I think the last one was about 1998 or 99 and shipped to Germany and then the Panasonic we recently posted as well).
This is an INCREDIBLY ‘Musical’ sounding receiver. Lot's of surprising 'punch' and volume.
Yes, I know, it's a 'compact' and not a 'separate component', but it really is that nice!!! Enough power for up to 'medium-large' / 10" woofer speakers.
Interestingly, this unit also has the most extensive 'spec listing' of any unit we've ever posted, even over such units as a Pioneer SX-1980 (not even considering that it's 2 units in one). And, the specs are quite respectable in most aspects!

Marantz 4025 / MR425 Features:
  
Receiver
features:
-
Weighted flywheel, analog, slide rule tuning
- Separate Bass and Treble controls utilizing high quality de-tented pots
- Oversize volume control,utilizing high quality de-tented pot
- "Loudness" function to boost Bass and Treble in relationship to Mid frequencies at lower volume levels for a much fuller sound.
- FM Muting (separate from 'Stereo / Mono' switch)
- Stereo / Mono selector
(Separate from 'FM Muting' switch)
- LED Stereo
Indicator
- Hi filter for reducing tape hiss / electronic hiss & noise and record static

- Phono / Turntable input with Built-In Phono Pre-Amp
- Tape Input from built-in cassette deck (not for signal processor insertion)
- Tape Output RCA jacks (Record Out / 'Pre-Volume', Line Level output jacks for any Source)
- Aux input (may also be used for Video / CD / DVD /DAT / VCR / MP3 / iPod® / iPhone® / iTouch® / i-gadget / MP3 / XM® / SIRUS®  etc.)

- Microphone Input to tape
(be careful with your speakers if using an 'open / live' mic with home-audio speakers)
- A, B, or A+B speaker selector

- Standard 1/4" Stereo Headphone jack

- Built-in, internal AM ferrite antenna
- Externally located 'Mains' protection fuses located on rear panel
- Un-switched convenience AC outlet with 200 Watts capacity

Cassette Deck features:
- Stereo Playback and Recording 
- Super-Hard, 'Permalloy' PB / REC head
- 2-Position Tape Recording Bias selector
- 2-Position Tape EQ selector (for PB and REC)
- Dolby B NR
- Dual Back-lit, analog, Record Level VU level meters for Record and PB levels
- Separate L & R Input level controls or 'Auto-Level' Limiter
- Locking Fast Forward and Re-Wind

- 'Pause' function
- Analog / Mechanical Tape Counter

- Standard / 1/4" microphone inputs mounted on the front panel
- Microphone Input
- Rear mounted RCA I/O's

MARANTZ 4025 SPECIFICATIONS:

POWER / PRE AMP SPECIFICATIONS:
THD;
0.1% @ full rated power @ 1kHz.
Power Frequency bandwidth of power amp section; 16-30,000Hz
Frequency bandwidth of Pre-amp section; 18-24,000Hz (measured at AUX)
 IMD utilizing AUX; 0.1% @ full rated power / 20-20kHz and 8 Ohms
 Damping factor; 30 @ 8Ω full bandwidth
RMS rated Power: 2 x 25 Watts @ 8 Ohms or 30 Watts @ 4 Ohms
Headphone Jack Load Impedance; 8 Ohms
  Hum and Noise; >80dB on AUX / Tape
Input Sensitivity AUX / Tape; 180mV @ 20kΩ
Channel Balance @ 0 to -40dB / 40-16kHz;
1.5dB ALL inputs
Inter-channel Crosstalk; 47dB (non-Phono)
Record Out Levels / Impedance; 500mV / 220 Ohms @ 1kHz
Bass Control;
likely approx ±10dB @ 10hz
Treble Control; 
likely approx ±10dB @ 20khz
High Filter; -10dB @ 8kHz @ 12dB Oct!
"Loudness" Contour;  likely approx +8dB @ 50hz, +3dB @ 10khz (w/ volume set at -30dB)

TUNER SPECS FOR FM:
Tuning Range;
87.4 - 109MHz (a bit wider than most tuners!)
Freq Response;
30-15kHz (limited by FCC)
S/N (Weighted); > 62db Stereo w/ 1mV input
Usable Sensitivity @ 40kHz Deviation & @ 98 Mhz:
Mono; (1.7 uV)
Stereo; 60 uV)

Capture Ratio; 1.0dB (approx)
IF Rejection; >90dB
Alternate Channel Selectivity @ 98mHz (±300kHz); >65dB
Image Response Ratio: 50 dB
Spurious Response Rejection: 90 dB
AM Supression; 50dB
Pilot Signal & Subcarrier Rejection: 19kHz = 58 dB & 38kHz = 58 dB
THD w/ 100% modulation Mono; 0.2%
THD w/ 100% modulation Stereo0.3%
Stereo Separation; >42dB
Channel Balance;
1.0dB
Output Voltage @ 1kHz; 600mV
Output Impedance @ 1kHz; 4.4k Ohms
Ant Terminals;
Balanced 300 Ohms / Un-balanced 75 Ohms

TUNER SPECS FOR AM:
Tuning Range;
525-1620kHz
(a bit wider than most tuners!)
Useable Sensitivity @ 26dB S/N, 30% Modulation @ 1Mhz;
20 uV with ferrite stick antenna
Image Rejection @ 1 Mhz; 41dB
IF Rejection @ 1 Mhz; 55dB
Selectivity @ 1 Mhz ± 9kHz: 20dB

Spurious Response Rejection
@ 1 Mhz: 38 dB
THD w/ 100% modulation Mono; 1.0%
Freq Response; 40- ~ 2.2kHz

S/N @ 1 Mhz: > 43db

PHONO SECTION SPECS:
Freq Response;
RIAA Standard Curve +/- 2dB.

S/N;
>72 dB

Input Sensitivity;
2.7 mV @ 47
 Overload 'Margin';
31dB
Inter-channel Crosstalk;
45dB (Phono)

Cassette Deck Specifications:
 
Track format: 
4 track / 2 channel
Motors:
 1x DC Servo Controlled
Tape Speed
: 
1 7/8 ips / 4.75 cm/sec
Heads: 2x; RP Super-Hard Permalloy. Erase is Ferrite
Recording System: AC Bias
Erasing System
: AC Erase
Meters
: 
Standard VU
Overall Frequency Response (Dolby Off);

40-14kHz +/- ~3db w/ Ferric Oxide Tape @ -20dB
40-13.5kHz +/- 3db w/ CrO2 Tape @ -20dB
40-12.5k
Hz +/- 3db w/ 'Normal' Tape @ -20dB
Harmonic Distortion / THD:
3.0%
 w/ Ferric Oxide Tape @ -20dB
3.0%
w/ CrO2 Tape @ -20dB
2.2% w/ 'Normal'
Tape @ -20dB
Wow & Flutter (WRMS):
0.18% wtd
S/N ratio w/ CrO2 tape:
>52dB w/ Dolby B OFF & >58dB w/ Dolby B ON (over 5kHz and and High Bias Tapes)
Line Input Level and Impedance ('Nominal'): 22dB @ 20K Ohms
Microphone Input Level and Impedance ('Nominal'):
72dB @ 10K Ohms
Line Output Level and Impedance ('Nominal'): 500mV @ 2K Ohms
Fast Wind Time:
~105 Seconds for C-60 tape

General
Specifications:
AC / Mains Power Requirements; 120 VAC @ 60Hz
Power consumption;
Idling Current 28Watts & 130 Watts at rated Output both channels
Semiconductor Complement:
Integrated Circuits; x7
Transistors; x61
Diodes; x43
Field Effect Transistors; x1
Weight: Stand alone; 28.6 lbs / 13.0 kgs & Originally packed; 33.0 lbs / 15.0 kgs


Again, we have done the previously stated refurbishment / restoration work (~16+ hours) on this unit to insure its performance, and it gets our full 'Certification'. All functions tested for perfect operation. Overall, it is in great cosmetic condition! Looks and sounds great! Measures 22.5" wide x 6.5" tall x 16.5" deep and weighs 29 lbs unpacked. Includes our standard 90 day limited warranty.
Cond. 8.5
Marantz 4025 / MRC425 Stereo Receiver / "Casseiver"

SOLD 7/30/19
SHIPPING TO TIM IN TENNESSEE


(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 
 
    

 

NEW LISTING 12/14/17
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CheckMarkSmall_web.jpg (792 bytes) warranty
STEREO / QUADRAPHONIC
RESTORED / REFURBISHED / FULLY SERVICED
VINTAGE STEREO RECEIVER SANSUI QUADRAPHONIC / 4-CHANNEL / 2-CHANNEL STEREO RECEIVER
SANSUI QRX-7500 RECEIVER
#...0232
Circa 1973-75

"WORLD AC POWER"
 M.I.J.

SOLD 1/4/19
SHIPPING TO ED IN FLORIDA

ü  Our technician has completely gone through and 'Certified' this unit.

ü  We have completely gone through this unit cleaning everything including all switches, controls and contacts. Extensive cleaning of unit internally.

ü Internal fuses checked for continuity and correct values. No issues found, fortunately. We don't like seeing incorrect fuses having been installed in a unit as that could mean it had prior issues, or if a fuse value was 'increased' it could have allowed too much current through an 'ailing' circuit causing un-due / un-necessary damage.

ü  Controls were 'flooded' w/ 'De-OxId' and are quiet

ü Tuner string checked for any fraying then re-tensioned to increase traction & relieve flywheel binding and re-centered pointer to correct dial position.

ü  We aligned the tuner front-end for optimum AM & FM performance as older internal tuner components have always drifted on vintage gear over the years. VERY GOOD TUNER! AM seems to be an 'afterthought' on many stereo receivers and component tuners. The AM is above average for a 'stereo receiver' on this SANSUI QRX-7500. 

ü All dial, indicator & meter lamps 'proactively' replaced for a TOTAL OF 26!!!

ü  We also checked the heat sink compound which should be good for another 30 years.

ü Amplifier section had output bias adjusted to spec levels of ~24.8mVDC on all four amplifiers.

ü  DC offset adjusted to VERY LOW levels on all four amplifiers.

ü All inputs tested and both side produces clean and even sine waves into 'brick-wall' 8 & 4 Ohm loads! No power supply hum of any kind. It's dead silent! All functions test fine.
Total restoration time investment 15 hours.

ü Following restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 72 hours into a 4 Ohm load.
 
On our test bench, this particular QRX-7500, #...0232, 'FRONT' amplifiers each produced 18 Volts per channel for 40 Watts per channel @ 8Ω via discrete output & 15 Volts per channel for 56 Watts per channel @ 4Ω
and
REAR' amplifiers each produced 11.5 Volts per channel for 16+ Watts per channel @ 8Ω via discrete output & 10 Volts per channel for 25 Watts per channel @ 4Ω
via discrete, Metal cased, TO-3 outputs.
(AC draw at idle .5A tested. DC as follows
FR = -1.0 mVDC
FL = +1.0 mVDC
RR = +2.5 mVDC
RL = -2.5 mVDC

(Floor noise measured at >60dBm / 0.1mVAC)
 ___________________________

 
HUGE and VERY IMPRESSIVE looking, Sansui, brushed silver, QUAD receiver, surrounded by handsome, real Walnut wood veneer side plates. This unit has THE highest 'KPD-Factor' of any we've had in a long time. What's a 'KPD Factor'? 'Knobs per Dollar! You could also say it has very high 'MPD' and 'LPD' factors as well (you should be able to figure those out now). Features gorgeous, back-lit slide rule analog tuning scale with matching VU meters as well. VERY elegant and IMPRESSIVE unit when lit in a darkened room.
'Heavy' built, machined aluminum knobs and button caps, also make this unit a pleasure to 'feel'. One of the most 'fun' receivers I've used in a long time. Would love to abscond with this one myself.
Sansui QRX-7500 Features include:
  

- Quadraphonic (sometimes spelled "quadriphonic" or "quadrophonic") / Stereo receiver 
- Weighted flywheel analog tuning
- A, B, Off or A+B Front and Rear speaker positions
- Separate Front and Rear, Bass and Treble controls
- Balance controls allow complete blending between Front and Rear / Left and Right
 - Built-in Hi and Sub filters (separately switchable Front and Rear) for reducing 19kHz pilot tone in FM broadcasts, Tape Hiss and the Sub filter for reducing turntable rumble
- FM muting
- ''Function Control' selector for 2-Channel Stereo, & 4-Channel modes of ''QS Synthesizer' (To convert (synthesize) conventional, 2-channel / stereo program sources to 4-Channel stereo output), 'QS Regular Matrix' (to decode and reproduce 4-channel program sources (records, tapes and their respective broadcasts),  ''Phase Matrix' (to decode and reproduce 4-channel program sources, encoded with the CBS / SQ matrix system) or 'CD-4 / Discrete' (when wishing to hear discrete 4-channel tapes or CD-4 (Quadradisc) records).
- Aux inputs for both Front and Rear (may also be used for Video / CD / DVD /DAT / VCR / MP3 / iPod® / iPad® / iPhone® / iTouch® / i-gadget / MP3 / XM® / SIRUS®  etc.)

- Dual tape monitors with Tape monitor A also featuring a DIN input as well as the standard RCA I/O's for both Front and Rear
  (Tape Monitors can be used with Tape decks such as Cassette Tape Recorders/ Players, Reel to Reel's, 8-Track Tape Cartridge Decks, Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / i-gadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
-  Dual Phono / Turntable inputs with Built-In Phono Pre-Amp, featuring 'Phono-2' compatible with 'CD-4' cartridges
- Loudness control for increasing 'rock-n-roll smile' tone curve at lower volumes
- Front and Rear 1/4" stereo headphone jacks for connection of either 'stereo' headphones, or 'quadraphonic / 4-channel' headphones
- Tu
ning
DArsonval meters for tuning and signal strength
- Quad VU meters for channel levels
-'CD-4' Level adjustments located on front panel for Carrier Level, and L/R Separation of Quad discs / records.

- Rear located, full barrier strip for external antenna connections
- Rear located main AC protection fuse
- Dual AC convenience outlets on rear panel with 1 switched and 1 un-switched for a total capacity of 250 Watts of accessories
  - True “
WORLD AC POWER"

   as it will work on both 50 or 60 Hz AC and voltages from 110-240 Volts AC


Sansui QRX-7500 Original Specs:

 POWER / PRE AMP SPECIFICATIONS:
THD;
0.3% @ full rated power @ 1kHz.
 Freq Response of power amp section; 30-30kHz @ 1W
 Power bandwidth of power amp section; 10-30,000Hz ±0dB
 IMD utilizing AUX;
 0.3% @ full rated power / 20-20kHz and 8 Ohms
 Damping factor; 40 @ 8Ω full bandwidth
Dynamic rated Power: 2 x 180 Watts @ 8 Ohms or 260 Watts @ 4 Ohms

Cont rated Power:
4x 32 Watts @ 8 Ohms / 1kHz (BOTH channels driven)
4x 52 Watts @ 8 Ohms / 1kHz (each channel driven)
4x 35 Watts @ 4 Ohms / 1kHz (each channel driven)
4x 28 Watts @ 8 Ohms / 1kHz (ALL channels driven)
4x 25 Watts @ 4 Ohms / 1kHz (ALL channels driven)


  Hum and Noise; >80dB on AUX / Tape
Input Sensitivity AUX / Tape; 100mV @ 50kΩ
Record Out Levels; 100mV
Bass Control;  ±12dB @ 50hz (most amp tone controls are only +/- 10dB)
Treble Control;  ±12dB @ 15khz (most amp tone controls are only +/- 10dB)
Low Filter;  -10dB @ 50Hz @ 6dB Oct
High Filter;  -10dB @ 10kHz @ 6dB Oct
"Loudness" Contour;  +8dB @ 50hz, +3dB @ 10khz (w/ volume set at -30dB)


TUNER SPECS FOR FM:
Tuning Range;
88-108MHz
Freq Response;
30-15kHz (limited by FCC)
S/N; > 65db Stereo w/ 1mV input
Mono Sensitivity; 1.9 μV
Capture Ratio; <2.0dB
IF Rejection; >90dB
Image Rejection; >75dB
Spurious Noise Ratio; >80dB
Selectivity; >60dB
THD w/ 100% modulation Mono; 0.3%

THD w/ 100% modulation Stereo0.5%
Stereo Separation; >37dB


TUNER SPECS FOR AM:
Tuning Range;
535-1605kHz
Useable Sensitivity; 50db/m with ferrite stick antenna
Image Rejection; >80dB
IF Rejection; >80dB
Selectivity; 25dB

PHONO SECTION SPECS:
Freq Response;
20-20kHz RIAA Standard Curve +/- 1dB.

S/N;
>70 dB

Input Sensitivity;
2.5 mV @ 50kΩ
 Overload limit;
150mV w/ 0.5% THD @ 1kHz

CD-4 DEMODULATOR:
Input Sensitivity;
2.5mV (adjustable 1 TO 10mV)
Input Impedance; 50kΩ
Freq Response (STD test signal); Main Channel 30-15kHz, Sub Channel 30-10kHz

 Power consumption;
140 Watts at rated
  

Again, as stated before, we have completely gone through this SANSUI QRX-7500 Quad receiver, cleaning and testing all and it gets our full 'Certification'. Everything is in fabulous electrical and cosmetic condition! Looks near new and sounds great! AMAZING looking when lit up at night or in a darkened room! Again, this unit is a 'blast' to use. It just simply 'feels nice'!
Comes with an 'e-copy / PDF download of the SANSUI QRX-7500 owners / users manual, and the service manual if the purchaser desires.  Measures 23.5" wide x 8" tall x 14.5" deep and weighs an impressive 55 lbs unpacked. Includes our standard 90 day limited warranty
.
SANSUI QRX-7500 STEREO RECEIVER
Cond. 8.5+++

SOLD 1/4/19
SHIPPING TO ED IN FLORIDA

(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)
 
 

     
   

     

 


          NEW LISTING 11/30/11
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CheckMarkSmall_web.jpg (792 bytes)  warranty
NEW
AUDIO-TECHINCA
STEREO HOME AUDIO / PRO TURNTABLE
MODEL AT-LP120USB
DIRECT DRIVE
FULLY MANUAL RETURN
WITH A GREAT DIAMOND CARTRIDGE NOW INCLUDED
NEW
for sale
One of the few 'QUALITY' turntables available under a $GRAND these days! The Audio-Technica AT-LP120 stereo turntable. Similar in design to some of the vintage turntable models, such as the Kenwood KD-550 'concrete base', the Sony PS-T1, and the Technics SL-1500, SL-1700MK2 or SL-D2 turntable models. This professional stereo turntable features a high-torque, direct-drive motor for quick start-ups yet is perfectly quiet. Classic 'S' shaped tone arm with 'universal' head-shell that allows mounting of most any 'quality', 1/2' cartridge, either MM (moving magnet) or MC (moving coil). Tone-arm mounted in high quality 4-point, Gimbol bearing.
NEW UPDATE--- Now having the table shipped with a much better cartridge than previously. It's now using one of our favorite 'all around' cartridge the AT-95E, instead of the 'clunkier' AT-2N (that cartridge liked to track at an incredibly heavy 3.5 Grams!!! Yuck...) Click here for further info on the cartridge.

NEW UPDATE--- We're now including the Audio-Technica AT-95E, MM, Elliptically cut diamond cartridge with tables purchased from us at Oak Tree Vintage.

Overall Table has good mass at over 20 lbs!

Features:

- Direct drive high-torque motor
- Fully-Manual operation
- Selectable 33/45/78 RPM speeds (you will need to acquire a stylus / cartridge designed for playing '78 RPM' records to utilize that feature to it's fullest)
- Professional weight cast aluminum platter with slip mat (no PLASTIC platters here, unlike many of the NEW tables out there!)
- ½-inch mount universal head shell
- Quartz Locked speed
or
- Strobe monitored, adjustable platter speed
- Adjustable tone-arm counter weight
- Adjustable 'Anti-Skating' control
- 500,000 Silicon oil fluid hydraulic tone-arm cueing
- Internal Built-in Phono Pre-Amp of decent quality so if you MUST use this with some sort of 'home-theater-surround-sound-5.1, 7.2, or 8.BR549 receiver' that the manufacturer forgot to include the phono pre-amp on. If you have a 'REAL receiver', ie, an old-school, vintage, 2-channel receiver or integrated amp or pre-amp with a phono pre built-in, then you can flip a switch and bypass the 'built-in' phono preamp.
- USB output—connects directly to your computer for plug-&-play use
- Forward or reverse play (this is a DJ feature, and if you value your vinyl or cartridge, DON'T USE 'Reverse'! If you have a crappy cartridge and are playing 'Frisbees', then 'go for it' if you're so inclined!
-
*Comes with Mac- and PC-compatible Audacity software and cables to digitize your LPs
If you appreciate the 'organic' sound of quality vinyl, then disregard the above stuff 'USB / SOFTWARE STUFF' and just 'LISTEN' to your vinyl the way it was meant.


SPECIFICATIONS:

Type:
3-speed, fully manual operation
Motor:
High-Torque, 16 pole, DC motor
Drive System:
Direct drive
Speeds:
33-1/3, 45, & 78 RPM
Pitch Variation:
Adjustable in ranges of +/-10% or +/-20%
Turntable Platter:
Die-cast aluminum
Starting Torque:
>1.6 kgf-cm
Braking System:
Electronic brake
Wow and Flutter:
>0.2% WRMS (33 RPM)
Signal-to-Noise Ratio:
>50 dB
Output Level Pre-amp "PHONO":
2.5 mV nominal at 1 kHz, 5 cm/sec
Pre-amp "LINE":
150 mV nominal at 1 kHz, 5 cm/sec
Phono Pre-Amp Gain:
36 dB nominal, RIAA equalized
USB Function:
A/D, D/A- 16 bit 44.1 kHz or 48 kHz USB selectable
Computer interface:
USB 1.1 Compliant Windows XP, Vista or MAC OSX
Power Supply Requirements:
115/230V AC, 60/50 Hz


Includes :

Software included: Mac- and PC-compatible Audacity software
Accessories Included: 'Universal' Head shell w/ pre-mounted AT-95E 'Green' 1/2" mount, Elliptically cut diamond tipped, MM cartridge, AC line cord, Included cables connect to your stereo or powered speakers, ie: Dual RCA (female) to 3.5 mm (1/8") mini-plug (male) stereo adapter cable, Dual RCA (female) to 3.5 mm (1/8") mini-plug (female) stereo adapter cable, 45 RPM adapter, USB cable & above mentioned recording software (Adapter cables for standard analog RCA inputs, as well as the 3.5mm TRS on computer sound cards.)
*System requirements (if you're planning on using the table to transfer and burn your LP's / albums, records to CD ROM or your computer hard drive or some other MP3 format):
PC or Mac with an available USB port (USB1.1 or higher),
CD-R or CD-RW writer for burning CDs & installation,
Includes Audacity software for PC & Mac users
(Audacity requires Mac running OS X 10.1 or later or PC running Windows (98 and above))


Again, we are having these tables shipped with the much better sounding AT-95E cartridge than the '3-GRAM TRACKING' AT-2N cartridge.
Comes with the Audio-Technicas 1 Year limited warranty handled through the AT. See Audio-Technica AT-LP120USB turntable owners manual or AT's web site for further details.
Dimensions w 17.72" x d 13.86" x 6.1" H and weighs 23.5 lbs.
AUDIO-TECHNICA AT-LP120USB TURNTABLE
Cond.- NEW
$349.99
and when purchased from Oak Tree Vintage also includes *AT-95E CARTRIDGE!


w/ MM, Elliptically Cut Diamond stylus cartridge, Dust Cover and all above mentioned cables and software.


*Turntable shipped directly from AT and the Cartridge will be shipped from us at Oak Tree Enterprises, LLC. Once products arrive, please call us for assistance with re-balancing tone arm and setting the 'Anti-Skate' adjustment.


(OK, do I really need to say it?... No, the laptop shown in the photos is NOT included.)
 

 

 

    

         NEW LISTING 9/4/12
(Click on above thumbnails to enlarge photos)

CheckMarkSmall_web.jpg (792 bytes)  warranty
NEW
AUDIO-TECHINCA
PROFESSIONAL / DJ / SOUND SYSTEM / CLUB STEREO TURNTABLE
AT-LP1240USB
DIRECT DRIVE
QUARTZ LOCKED OR MANUAL SPEED CONTROL
FULLY MANUAL
W/ 'REVERSE' PLAY
AND WHEN PURCHASED FROM OAK TREE VINTAGE WITH A NEW, DIAMOND CARTRIDGE NOW INCLUDED
NEW
for sale
Professional DJ / Club table. Quality tool for the 'long haul'! The Audio-Technica AT-LP1240-USB DJ turntable. Similar in design to some of the vintage turntable models, such as the Kenwood KD-550 'concrete base', the Sony PS-T1, and the Technics SL-1500, SL-1700MK2 or SL-D2 turntable models. This professional stereo turntable features a super high-torque, direct-drive motor for quick start-ups yet is perfectly quiet. Classic 'S' shaped tone arm with 'universal' head-shell that allows mounting of most any 'quality', 1/2' cartridge, either MM (moving magnet) or MC (moving coil). Tone-arm mounted in high quality 4-point, Gimbol bearing.

The AT-LP1240-USB plays back 33-1/3, 45 and 78 RPM records (78 is selected by pressing both 'speed' select buttons simultaneously). Its built-in phono preamp enables the turntable to be connected to a wide variety of music and home entertainment systems, powered speakers, and to A/V receivers that do not include a dedicated phono input (de-featable for 'old schooool' and 'REAL' receivers and integrated amplifiers that 'DO' have a built-in phono pre-amp. The turntable includes PC- and Mac-compatible Audacity® software that converts the audio on a record to MP3, WAV or other format digital audio files.

NEW UPDATE--- We're now including the Audio-Technica AT-95E, MM, Elliptically cut diamond cartridge with tables purchased from us at Oak Tree Vintage.

Table has great mass at almost 30 lbs!

Professional features for DJ use in nightclubs, touring & mobile applications:

- Direct drive high-torque motor
- Quartz Locked Speed Control System or 'Manual' Strobe Speed controls
*- Adjustable Braking Rate (0.2 – 6.0 seconds)
*- Adjustable Starting Rate (0.2 – 6.0 seconds)
*- Dual Platter / Motor 'Start' / 'Stop' controls
- Fully-Manual operation
- Selectable 33/45/78 RPM speeds
(you will need to acquire a stylus / cartridge designed for playing '78 RPM' records to utilize that feature to it's fullest)
- Professional weight cast aluminum platter with slip mat (no PLASTIC platters here, unlike many of the NEW tables out there!)
- Classic 'S' style tone-arm
- High quality 4-point Gimbol bearing
- ½-inch mount universal head shell
- Strobe monitored, adjustable platter speed
- Fluid damped tone arm cuing
- Adjustable tone-arm counter weight
- Adjustable 'Anti-Skating' control
*- Adjustable Tone-Arm bearing height
*- 45 puck storage pin
- Internal Built-in Phono Pre-Amp of decent quality so if you MUST use this with some sort of 'home-theater-surround-sound-5.1, 7.2, or 8.BR549 receiver' that the manufacturer forgot to include the phono pre-amp on. If you have a 'REAL receiver', ie, an old-school, vintage, 2-channel receiver or integrated amp or pre-amp with a phono pre built-in, then you can flip a switch and bypass the 'built-in' phono preamp.
- USB output—connects directly to your computer for plug-&-play use
- Forward or reverse play (this is a DJ feature, and if you value your vinyl or cartridge, DON'T USE 'Reverse'! If you have a crappy cartridge and are playing 'Frisbees', then 'go for it' if you're so inclined!
-
*Comes with Mac- and PC-compatible Audacity software and cables to digitize your LPs
If you appreciate the 'organic' sound of quality vinyl, then disregard the above stuff 'USB / SOFTWARE STUFF' and just 'LISTEN' to your vinyl the way it was meant.


SPECIFICATIONS:

Type:
3-speed, fully manual operation
Motor:
High-Torque, 16-pole, 3-phase, brushless DC motor
Drive System:
Direct drive
Speeds:
33-1/3, 45, & 78 RPM
Pitch Variation:
+/-10%
Turntable Platter:
332mm, Die-cast aluminum
Starting Torque:
>4.5 kgf-cm
Braking System:
Electronic brake
Wow and Flutter:
> 0.1% WRMS (JIS WTD) with 33 RPM
Tone-arm type:
Static balanced, Classic 'S' shape, universal head shell
Effective Arm Length:
230mm
Overhang:
15mm
Height of tone arm adjustment range:
0-6 mm
Tracking Error:
> 3 degrees
Applicable cartridge weight Without head shell:
3.5- 8.5 g
Anti-skating range:
0-3 g
Signal-to-Noise Ratio:
>55 dB DIN-B
Output Level Pre-amp "PHONO":
2.5 mV nominal at 1 kHz, 5 cm/sec
Pre-amp "LINE":
150 mV nominal at 1 kHz, 5 cm/sec
Phono Pre-Amp Gain:
36 dB nominal, RIAA equalized
RIAA 20-20kHz, +1/-3dB (In: 1.5mV 1kHz)
 USB Function: A/D, D/A- 16 bit 44.1 kHz or 48 kHz USB selectable
Computer interface:
USB function
A/D, D/A 16 bit 44.1 kHz or 48 kHz USB selectable
Computer interface USB 1.1 Compliant Windows XP or
above or MAC OSX or above

Power Supply Requirements:
115V AC, 60 Hz


Includes :

Software included: Mac- and PC-compatible Audacity software
Accessories Included: 'Universal' Head shell,
Slip mat: dust cover: platter: 45 RPM adapter: counterweight: head shell: power cord: USB cable: dual RCA (female) to 1/8" (3.5 mm) mini-plug (male) stereo adapter cable: dual RCA (female) to 1/8" (3.5 mm) mini-plug (female) stereo adapter cable: dual RCA (male) cable with integrated ground wire: stylus target light: Audacity software (CD)
*System requirements (if you're planning on using the table to transfer and burn your LP's / albums, records to CD ROM or your computer hard drive or some other MP3 format):
PC or Mac with an available USB port (USB1.1 or higher), CD-R or CD-RW writer for burning CDs & installation.
Includes Audacity software for PC & Mac users
(Audacity requires Mac running OS X 10.1 or later or PC running Windows (98 and above))
(Refer to included software guide (also available online at www.audio-technica.com) before connecting the turntable to your computer.)
Comes with the Audio-Technicas' 1 Year limited warranty handled through the AT. See Audio-Technica AT-LP1240USB turntable owners manual or AT's web site for further details.
Dimensions w 17.72" x d 13.9" x 6.6" H and weighs a HEAVY 28 lbs.
AUDIO-TECHNICA AT-LP1240USB TURNTABLE
Cond.- NEW

$529.99
and when purchased from Oak Tree Vintage also includes *AT-95E CARTRIDGE!

*Turntable shipped directly from AT and the Cartridge will be shipped from us at Oak Tree Enterprises, LLC. Once products arrive, please call us for assistance with re-balancing tone arm and setting the 'Anti-Skate' adjustment.

* Denotes change / addition from previous model
 

 
 

    


   

     

NEW ADDITION 8/27/19
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
RESTORED / REFURBISHED / FULLY SERVICED / WARRANTED
VINTAGE STEREO RECEIVER
SANSUI 2000X STEREO RECEIVER
140 WATT RATED DYNAMIC POWER
 #...0852
Circa '73-76
"WORLD AC POWER" ™
MIJ

SOLD 9/11/19
SHIPPING TO LYN IN CALIFORNIA


ü Our technician has completely gone through and 'Certified' this unit.

ü Everything was cleaned inside and out including all contacts, switches, controls and I/O jacks.

ü Control Pot shafts re-sprung.

ü Internal and external fuses checked and replaced where necessary.

ü All 4 power transistors removed and tested for leakage.

ü Re-flowed multiple solder joints

ü We also aligned the tuner front end for optimum AM & FM performance as older internal tuner components have always drifted on vintage gear over the years.

ü We re- aligned the tuner dial indicator for improved accuracy

ü All meter, dial, and FM stereo lamps replaced for trouble-free service (very difficult to do on this series of receiver). 6x #40 & 4x #25-130 bulbs / lamps.

ü Tuner string re-tensioned for improved flywheel 'grip'

ü Amplifier section had output bias and DC offset adjusted to spec levels

ü Repaired 'open' coil on tuning meter

ü Entire unit cleaned / detailed cosmetically inside and out, including a fresh coat of lemon oil rubbed into the Real Walnut wood veneer cabinet, while chassis was removed.

ü All inputs have been tested and both side produces clean and even sine waves into static 8 & 4 Ohm loads! No power supply hum of any kind. It's dead silent! All functions test fine.

ü Following our restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 48 hours and into a 4 Ohm Load! You will not be disappointed. Total restoration / ‘tech time’ investment ~13 hours.

ü On our test bench, both this unit's amplifiers, #...1204 produced peak power of 18 Volts per channel @ 8 Ohms for 40 Watts and 15 Volts @ 4 Ohms for 56 Watts per channel via discrete, TO-3, metal cased outputs with 1 kHz input. (4x Toshiba 2SC793, (same as Sanken 2SC1111)).
ü Idle current draw measured at 0.2A. Bias adjusted to spec of 20mA. (which by the way, once biased, brought the idle temperature of the heat-sink down from ~220F degrees to ~68°F)
ü DC offset adjusted to <15mVDC L & R unloaded and ZERO mV loaded (from the 75mVDC exhibited initially).
ü Floor noise measured at -60dBm AC w/ AUX shunted).
  ____________________________
  
This receiver is from what many consider to be one of Sansui's best eras. The Sansui 2000X stereo receiver. The "X" suffix designates upgraded F-6013 driver boards that are sought after by owners of "non-X" units as an aftermarket upgrade. We have had a few 'X000' series Sansui units and they are among some of the best sounding, 'vintage', 'main stream' amplifiers we have heard. Lots of headroom and punch! Similar in sound to many of the NAD amplifiers / receivers we sold back in the 80's. This one also is installed in the optional, REAL walnut wood veneer case that's in beautiful condition as well.

Sansui 2000X Features include:


§
  Weighted flywheel, 'slide rule' style analog tuning
§  Dual Tuning Capacitors. One for FM and one for AM. Allows for incredibly 'quiet' tuning
§  Speaker Damping Selector
§  A, B, A+B, Off, speaker positions
§  Separate Left and Right, Bass and Treble w/ 'concentric' controls
§  Hi-Filter for reducing tape hiss / electronic hiss & noise and record static
§  Built-in Subsonic Filter to eliminate excess rumble from sources such as turntables
§  Pre-Amp Out / Power-Amp In Loop (unique to the "X" version)
§  'TRUE' tape monitor featuring both RCA and DIN I/O's (Tape Monitors can be used with Tape decks such as Cassette Tape Recorders/ Players, Reel to Reel's, 8Track Tape Cartridge Decks, Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / i-Gadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
§  Aux inputs (may also be used for Video / CD / DVD /DAT / VCR / MP3 / iPod® / iPad® / iPhone® / iTouch® / i-Gadget / MP3 / XM® / SIRUS®  etc.)
§  Tape B to Tape A Dubbing capability
§  Dual Phono / Turntable inputs with Built-In Phono Pre-Amps
§  "Loudness" function to boost Bass and Treble in relationship to Mid frequencies at lower volume levels for a much fuller sound.
§  Stereo / Mono selector for Pre-Amp separate from the FM tuner selector
§  Pre-Amp Stereo / Mono selector
§  Stereo Reverse selector (great for troubleshooting speakers)
§  FM Muting separate from the Stereo / Mono selector
§  FM MPX filter (removes the 19kHz pilot signal from FM broadcasts)
§  Rear located MPX Separation & Level adjustments
§  FM Dist / Loc selector
§  Front mounted 1/4" stereo headphone jack
§  Tuning window features VU meter for tuning signal strength
§  Rear located speaker and main power protection fuses
§  Vertically finned heat sinks for very efficient cooling and long life
§  Built-In Ferrite 'Stick' AM antenna
§  True "WORLD AC POWER"™ allows unit to be operated on 50 or 60 Hz AC and will select voltages from 110v, 120v, 220v and 240 Volts AC input.
§  Dual AC convenience outlets on rear panel with 1 switched and 1 un-switched

Sansui 2000X SPECIFICATIONS:

POWER / PRE AMP SPECIFICATIONS:

Music Power: 140 Watts dynamic @ 4 Ohms
100 Watts dynamic @ 8 Ohms
Cont rated RMS Power: 2 x 52 Watts @ 4 Ohms, 20-20k & <0.8% THD
THD; 0.8% @ full rated power
IMD; 0.8% @ full rated power
Power Bandwidth (IHF); 20Hz-40kHz
Damping factor; 24 @ 8Ω & full bandwidth
Hum and Noise;  70dB on Phono w/ 2.5mV input and 80dB w/ 5.0mV input
Input Sensitivity AUX / Tape; 150mV @ 100kΩ
Bass Control;  ±12dB @ 50hz
Treble Control;  ±12dB @ 10khz
High Filter;  -10dB @ 10kHz
Low Filter;  -10dB @ 50Hz
"Loudness" Contour;  +8dB @ 50hz & +3dB @ 10kHz (volume control @ -30dB)

TUNER SPECS FOR FM:
Tuning Range;
88-108mHz
Freq Response; 30-15kHz
Capture Ratio; 1.0dB
S/N; > 60db Stereo
20dB Quieting Sensitivity Mono; 1.4μV
FM Alternate Channel Selectivity; > 40dB
Spurious Radiation; <34dB
Spurious Response Rejection; >90dB
Image Rejection Ratio; >90dB
THD 65dBf @ 1kHz, Mono;  <0.8%
Stereo Separation Ratio: >35dB @ 50Hz to 10kHz

TUNER SPECS FOR AM:
Tuning Range;
535-1605kHz
Image Frequency Rejection; >50dB @ 1kHz
IF Rejection; >80dB @ 1kHz
Useable Sensitivity; 100μV / m @ 1kHz with ferrite stick antenna
Selectivity; >20dB @ 1kHz

PHONO SECTION SPECS:
Freq Response;
20-20kHz

THD; 0.8% @ 200 mV @ 1kHz
Input Sensitivity; 2.5 mV @ 50kΩ on 'Phono-1' & 2.5 mV @ 100kΩ on 'Phono-2'
Max input; ~200 mV @ 50kΩ

Again, we have completely gone through this unit. This is the first Sansui 2000X we have refurbished in a few years. Brushed aluminum face and knobs in like NEW condition. Unit looks and sounds great! Originally 'Optional', but now included, Real Walnut wood, veneer case in decent condition, also in NEAR NEW condition with only the most minor of visible wear.
Again, these are known for their exceptional tuner quality on both AM and FM and their VERY PUNCHY sounding amplifiers. Very 'Musical' sounding stereo receiver. Measures 18" wide x 14" deep x 6.5" deep and weighs a whopping 34 lbs unpacked. Comes with standard 90 day limited warranty.
SANSUI 2000X STEREO RECEIVER
Cond. 8.5++

SOLD 9/11/19
SHIPPING TO LYN IN CALIFORNIA

(Cons. M.H.)


(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

 

    

   

      NEW LISTING 5/21/18
(click on above thumbnails to enlarge photos) 
CheckMarkSmall_web.jpg (792 bytes) warranty
 
CLASSIC STEREO SPEAKERS
 JBL L100 'CENTURY'
#...1011A / 9060A
  Circa mid 1971-77
 MADE IN USA

SOLD 5/23/19
SHIPPING TO STEPHEN IN COLORADO


   One of the top 'Classics' and one of the most sought after speaker models ever made. The JBL L100 ‘Century’ speakers. It's hard to expand on what's already been written out there about these speakers. Most fans of these know some version of the JBL L100 story or link to an appreciation web site. They have been one of my favorites for some years now, and I finally just finished a pair for myself to keep as well. They are capable of high volume levels while producing "pounding" & "tight" bass with great balance on the top and mid end. Just a great 'all-around' speaker for home audio listening or recording ‘studio monitor’ use. Just as happy with a medium-small size amp as they are with amps of larger size (probably not efficient enough to enjoy with a small wattage, under 25 Watts or single ended tube amp).
 Our speaker tech has completely gone through and 'certified' these. Tweeter diffusion foam replaced. All drivers were removed and reinstalled into cabinet with ‘added’ gasketing material under their frames to further reduce any possibilities of vibration or acoustic anomalies.  'High' and 'Mid' Attenuators checked for functionality (these attenuators have wipers that go 'a bit too far', thus go past their coils at 100% rotation, so for 100% signal, adjust to extreme 'clockwise', then back them off 1-2mm). The tweeters have new dispersion foam installed. Grill front frames re-covered and look fabulous (while not shown in the above photos, the "JBL" logo badges are intact on the frames). Next, as always they were tested with both recorded material, PN 20-20k and swept them with our AF generator from 20-3kHz. Then came our standard, 'abusive' test recordings.  The only cosmetic issue worth mentioning, is that the top of one cabinet appears to have been re-veneered, and does not match the cosmetics of the other cabinet (see photos above & reflected in the price). Other than that the front corners and edges are all nice and crisp with virtually no wear.
Cabinets were finished off with a coat of ‘Lemon Oil’ and then hand-rubbed with ‘Feed-n-Wax’. They look GREAT!
Following the above work, these speakers are ready to go!
We auditioned this pair well. Following the above mentioned 'barrage', our demo cuts ran the gamut from Dire Straits, 'Brothers in Arms', TLC 'Fan Mail', Allison Kraus and Union Station, Nickelback, and a few others, all digitally recorded and some 'DDD'.
'Solid', punchy and 'tight' low-end, with no 'mush'. Overall, Great 'tone' quality, but then again, they're one of the most famous and sought after speaker models ever made. Heck, most of the above cuts may have been originally mixed on a pair of these.
 From an original JBL brochure from ’73,

    
  “The JBL L100, is the most successful speaker ever produced by JBL. It may well be the most successful loud speaker in its class ever produced by anyone.”
      “The JBL L100 is essentially the JBL 4310 studio monitor in a more ‘handsome cabinet’ and was the most ‘expensive bookshelf speaker’ in it’s time.”

  
   JBL L100 Century FEATURES:
 

- 3-Way, Bass Reflex cabinet design 
- 12" / 30cm, JBL 123-A, Die-Cast-aluminum framed, "Ribbed", cone woofer, coated with ‘Lansaplas’, an ‘anti-resonance’ material to reduce radial ‘eddy currents’ (reason for the ‘white’ color), w/ 3”, ‘Edge-wound’ copper ribbon Voice Coil, surrounded by a powerful 6.75 lb ‘AlNiCo V’ magnet.
- 5"JBL LE5 Midrange Die-Cast-aluminum framed, Non-deteriorating paper surround, 7/8” VC and 2.75 lb, AlNiCo magnet
- 1.4" JBL LE25 Tweeter, Die-Cast-aluminum framed, w/ 5/8” copper wound VC & Non-deteriorating paper surround Cone-Tweeter
- "Real" internal 3-Way cross-over
- Hi and Mid attenuators on front panel for custom tailoring sound to your tastes and listening room
- 2.75" tuned port for extending bass response
- Real wood Walnut Veneer Finish on well built, heavy wall cabinet
- Speaker input connectors have been upgraded from the historically anemic JBL connectors used during that era, to heavy duty, 3-Way, binding posts
  
JBL L100 CENTURY SPECIFICATIONS / SPECS:
Frequency Response: Not Specified on most JBL’s
Efficiency: ~85 dB 1W@ 1m
Nominal Impedance: 8Ω each
Cross-over frequencies: @ 1.5k & 6kHz
Continuous / Max power rating: 50 continuous to clean peaks of ten fold
   
The JBL L100 ‘Centurys’ are from what most folks (including us) would argue was JBL’s 'Pinnacle' period, and were offered in the same line-up that gave us the such great JBL models such as the JBL L26 & L36 ‘Decade’ series speakers, the JBL L300A ‘Summit’ speakers, the JBL L65 ‘Jubal’s’, the JBL L166 ‘Horizon’ speakers, The monstrous JBL Paragon D44000 speakers and of course the industry standard, JBL 4310, 4311 4311B & 4312 studio monitors. Again, we have completely tested all drivers at individually applicable frequencies with a sweep generator looking for any irregular anomalies in either the drivers or cabinet structure integrity.
HUGE in SONICS! These are one of the most incredible sounding speakers you will hear. These have most everything we look for in a home audio speaker such as 'balance', detail, power handling, accuracy, punch and 'largeness of sound'. These are in excellent condition as well. Plenty of top end that can be filtered / tailored to your tastes with built-in attenuators. Huge, DEEP low-end that still stays incredibly tight (shakes the concrete floor in our demo room). They are able to handle "power" MUCH better  than your average speaker. Not simply referring to they're wattage rating, but just the way the perform at higher power / volume levels without "falling apart" sonically. We 'stood' on them HARD with our test Hafler power amp. JBL L100’s are always among the top performers of the many speakers we have auditioned over the years. 
 Also, again, these look great having the above mentioned work. JBL L100’s are one of our favorite speakers and for 98% of folks out there, probably one of the most ‘listenable’ speaker you will own for ‘all-around’ music genres and power applications.
If you are looking for a great performing pair of JBL L100’s, sonically as well as cosmetically, then here you go! Comes with a link to an ‘e-copy’ of the original ’73 brochure. Each measures 23.5" h x 14.25" w x  13.75" d and weighs 52 lbs unpacked. Includes our 90 day warranty (excluding problems due to under / over powering)
JBL L100 'Century' SPEAKERS
Condition 8.5 (only due to 'top veneer mismatch')
with grills
(Cons.) M.R.

SOLD 5/23/19
SHIPPING TO STEPHEN IN COLORADO



 
 (Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

 

    

        NEW LISTING 11/2018
 
(click on above thumbnails to enlarge photos) 
CheckMarkSmall_web.jpg (792 bytes) warranty
VINTAGE KENWOOD SPEAKERS
KENWOOD KL-777X
15" WOOFER / 3-WAY / 4-DRIVER
200 WATTS

WITH TWEETER / MID PROTECTION ADDED
#...0829/0904
Circa 1979-81
Made in Japan

SOLD 12/20/19
SHIPPING TO DAN IN CALIFORNIA

Classic lattice grill, vintage & large Kenwood KL-777X stereo speakers. 3-Way, 4-Driver, Bass Reflex cabinet design. These are VERY efficient speakers with above average tone balance for late '70's speakers. Plenty of top end that can be filtered / tailored to your tastes with built-in attenuator or external EQ / tone control. Also HUGE & tight low end, likely due to the ported and very 'tuned' cabinet design. They also seem to be able to handle "power" better than your average speaker. Not simply referring to they're wattage rating, but just the way the perform at higher power / volume levels without "falling apart" sonically.

Our speaker tech has completely gone through and 'Certified' these.

- All drivers were removed and tested individually.

- Attenuators / L-pads cleaned for 'intermittent free' performance.

- Poly-Spun batting added to existing damping material to 'tighten up bass response' and reduce cabinet 'ring'.

- We were originally prepping these speakers for a commercial application (Micro-Brewery) so for more 'trouble-free' durability, we added #1156 bulbs as 'shock absorbers' to the tweeters and midranges (as we commonly do for 'commercial applications' or where there's a chance a speaker may be subjected to more stringent duty cycles).
(This particular chain of 'mid-western' micro-brews have purchased dozens of pairs of speaker from us over the past 5 years, actually consuming most of the 'lattice grill' units that have come in to us. These were a in a batch that we did for their last location, that were not needed in the end, as that install had more than enough)

- Gasket / sealant material was added to all driver mounting flanges, prior to re-installation to reduce any possibilities of vibration or acoustic anomalies.


Cosmetically, cabinets were cleaned & the wood grain, vinyl wrapped cabinets are in decent shape with typical nicks and scuffs. One of the Poly molded grills has some 'chunks / chips' out of one corner, but other than than, both are in good 'structural' shape (see photos above). Felt feet were installed to the cabinet bottom plates.
Next, as always, they were tested with both recorded material, PN 20-20k and swept them with our AF generator from 1Hz-3kHz.
Then came our standard, 'issue exposing' and on some levels, 'abusive' test recordings. These speakers are ready to go!

We auditioned this pair extensively and 'THEY DELIVERED' as expected, but additionally adding the 'gasketing' really 'tightened' up the cabinets and cleaned up the bass response. The 'bass' is not only solid and tight on these speakers, but goes VERY DEEP.

Our demo cuts included the following; Dire Straits' "So Far Away" from their album 'Brothers in Arms' album,
Donald Fagens, "I.G.Y." from the album "Night Fly"
(solid / snappy reproduction), '24K Gold Edition of Jennifer Waren's "Famous Blue Raincoat' (the saxophone was a bit bright, but not offensive, smooth),
TLC's "Scrub" from their album 'Fan Mail'
(did 'sub-bass' note @ 1'25" & 1'35" decently,
Allison Kraus and Union Station's "Baby, Now That I've Found You"
(upfront and natural),
Cowboy Junkies ‘Sweet Jane
(VERY open’),
Don Williams' DDD version of 'Country Boy'
(good, 3-D soundstage),
Calvin Hampton's, "The Wedding March" from "Digital Pipes, The Splendor of the Organ", a digital recording of a cathedral pipe organ
(open and HUGE!),
Trapt’s “Headstrong”
(was ‘solid’ and the woofers exhibited no sign of fatigue even at upper power levels)
Just about anything from "KORN" ROCKED!!!
Most of the cuts from Michael Jacksons' 'Number Ones' such as "Bad" "Beat It", and "Billy Jean", were ‘strongly’ reproduced and VERY solid,
Van Halens' cut "Drop Dead Legs" from the CD "1984" ROCKED!

Nickel Creeks’ “When in Rome” from their CD "Why Must the Fire Die?"
(was a BIG, open and up-front),
and a few others, all digitally recorded and some 'DDD'.

 Incredible power handling characteristics for a speaker this size. They are able to handle "power" better MUCH than your average speaker. Not simply referring to their wattage rating, but just the way they perform at higher power / volume levels without "falling apart" sonically. We 'stood' on them HARD with our test Hafler 500 Watt power amplifier. 'Solid', punchy and 'tight' low-end, with no 'mush'.

We auditioned this pair extensively and 'THEY DELIVERED' as expected, but additionally adding the 'gasketing' really 'tightened' up the cabinets and cleaned up the bass response.

Great sounding speaker for that classic 70's stereo receiver or amplifier!
 We have completely tested them with both recorded material, PN and swept them with our AF generator.

Kenwood KL-777X Features

- 15" Non-deteriorating Cloth surround Woofer
- 6.25" x 2" Exponential-Horn / Upper Midrange
- 2x 2.5" Tweeters
- "Real" internal cross-over, not just a couple of "caps" on the mids and tweets
- 3-position Hi frequency attenuators, using resistors, not failure prone Ni-Chrome wire, for custom tailoring sound to your tastes and listening room

- Dual 2" Tuned ports for extended low end


Kenwood KL-777X Specifications:

Enclosure Type: Bass Reflex / Tuned-Ported
Frequency Response: ~20-21,000Hz +- 3dB
Efficiency: ~96dB 1w @ 1m
Nominal Impedance:
Cross-over frequencies: 2kHz and 8kHz
Recommended Nominal Power Amplifier range: 10-250 Watts
Recommended Power Rating: 100 Watts
Recommended MAX Power rating: 200 Watts


Very nice looking wood grain, vinyl wrap cabinets with only a few, minor 'battle scars'. Again, as stated above, both Poly molded grills in fair shape as one has the 'chips / chunk' from the top corner (see photos above).
All drivers are in perfect condition, work and sound fine! Tested for all frequencies with a sweep generator.
Speakers look fine (except for the above mentioned grill issue) and sound GREAT! Huge, accurate and loud sound, but also very efficient at lower powers due to their 96dB rating! If you're looking for a great performing speaker at medium to higher vol
ume applications, you will not be disappointed with these speakers. Each measures
25.75" H X 23" W X 10.5" D and weighs 37 lbs unpacked. Includes our standard 90 day limited speaker warranty (& excluding problems due to under / over powering)
KENWOOD KL 777X
Cond. 8 (due to scuffs / grill chip)
with grills
SOLD 12/20/19
SHIPPING TO DAN IN CALIFORNIA

(Cons.) C.B.S.

 
 (Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)



 

 

      

      NEW LISTING 11/2018
(click on above thumbnails to enlarge photos) 
 CheckMarkSmall_web.jpg (792 bytes) warranty
VINTAGE
RECTILINEAR III "TALL BOYS"
STEREO SPEAKERS
#...7942 / 7982
Circa 1968-73
MADE IN THE USA!

SOLD 5/5/19
SHIPPING TO FRANK IN CONNECTICUT

Our speaker tech has completely gone through and 'Certified' these.  We have completely tested all drivers. Original mids' were 'questionable' on the 'audio sweep' so the Midrange's were replaced with a pair of 'originals' we had 'rat-holed' here at Oak Tree Vintage. All drivers were removed and reinstalled into cabinet with ‘added’ gasketing material under their frames to further reduce any possibilities of vibration or acoustic anomalies. Both Mid and Top End attenuators had their contacts burnished and were cleaned internally. Next, as always they were tested with both recorded material, PN 20-20k and swept them with our AF generator from 20-10kHz. Then came our standard, 'abusive' test recordings. We also converted the grills from a 'nailed on' attachment to Velcro and added 'pull-tabs' to facilitate removal (commonly if someone has tried to remove the grills from Rectilinear 'Hi-Boys', the masonite frames will be broken / cracked from being pulled away from the baffle board nails. These were expertly removed, thus are completely intact and un-broken). These speakers are ready to go!

Rectilinear 'III Tall Boys' features include:

- 4-way, 6-Driver, Bass Reflex speaker design
-12" Low Frequency Driver (woofer) (Jensen)
- 5" 'Philips" Midrange w/ 'whizzer cone' & w/ AlNiCo magnets
- 2x 2.5" 'Danish made Peerless' Tweeters w/ AlNiCo magnets
- 2x 2" 'Danish made Peerless' Tweeters w/ AlNiCo magnets
- 2" Tuned port for extended bass response
- Dual Attenuators


Rectilinear 'III Tall Boys' Original Specifications:

Frequency Response: 22-18,500Hz +- 3dB
Nominal Impedance:

Cross-over frequencies:
@ 500Hz, 3kHz & 11kHz
Recommended Power amplifier rating:
20-100 watts

From a 1967 Stereo Review Julian Hirsh had this to say about the Rectilinear III, "
Over a period of several months, we have had the opportunity to compare it with a number of other speakers that can 'outpoint' the Rectilinear III on any "individual" characteristic-frequency range, smoothness, distortion, efficiency, dispersion or transient response. However, none of the speakers combine ALL of these properties in such desirable proportions as the Rectilinear III", and  in a 1972 Stereo Review, he had this to say about the Rectilinear III, "...the two samples we have tested are among the best-sounding and most 'natural' speakers we have heard"
This pair actually has 'Jensen' built 12" woofers from the factory (my personal Rectilinear III-High-Boys do not. Just FYI.) These are great sounding 12" 4-way speakers. All drivers feature a non-deteriorating cloth surrounds. The driver compliment consists of one heavy duty 12" woofer, one 4" midrange with hi-mid whizzer cone, two 2.5" cone tweeters and 2 1/5" cone super tweeters. Bass is enhanced via a 3" tuned port.
System input is via binding-post / banana jacks. The input plate also features midrange and hi-freq attenuators, and the "MADE IN THE USA" plate. The entire enclosure is damped with batting. The cabinets are a beautiful American Walnut with very nice grain featured throughout and are in near new condition. These have great efficiency, but are still able to handle bigger power. Huge bass and crystal clear highs with just enough mids.

These things ROCK! I know. These are the pair from my personal 'speaker stash / collection'.

They measure 35" tall x 18" wide x 12" deep and each weighs 70 lbs unpacked. Comes with an 'e-copy' /pdf download of the Rectilinear Owners manual, as well as a few 'e-copies' of original brochures. Includes our 90 day warranty (excluding problems due to under / over powering)!
RECTILINEAR III
Cond. 8+
with grills
SOLD 5/5/19
SHIPPING TO FRANK IN CONNECTICUT


(Due to the dimensions and / or weight of these speakers, Packing / SHIPPED will be somewhat more 'involved' than typical. Custom, double-wall boxes will be manufactured specifically for them. While we order custom built boxes often, this can sometimes delay SHIPPED by 5-10 days)

 (Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

  

 

 

    

NEW LISTING 11/9/18
(click on above thumbnails to enlarge photos) 
CheckMarkSmall_web.jpg (792 bytes) warranty
RESTORED / REFURBISHED / FULLY SERVICED
VINTAGE
TECHNICS SPEAKERS
MCS / TECHNICS
8320
#...A506 / A545

Circa Late 1970's early 1980's
MIJ

SOLD 11/12/18
SHIPPING TO WILLIAM IN MARYLAND

These are from an upper-end line of speakers that Technics produced for MCS. The "Linear Motion" line used a Tri-Planer baffle board design to more correctly "time align" the 'top end' drivers with the woofer. The Midrange is on a 'spacer' to position it (time-wise) between the tweeter and woofer. This design was based on the Flagship (and very expensive) Technics SB-7070 speakers.

Our speaker tech has completely gone through and 'Certified' these. We have completely tested them with both recorded material, PN 20-20k and swept them with our AF generator.  
MCS 8320 Features include:

- 3-Way, Bass Reflex cabinet
- 'Time-Aligned' / Bi-planar baffle board

- 2
" Pulp-cone tweeter
- 4" Pulp-cone Midrange
- 12" Ribbed, Pulp-Woofer with
non-deteriorating Cloth surround
- 2.25" tuned port for extending low end

- External, resettable protection relays for all drivers
- 'Spring Clip' Speaker terminals


MCS 8320 Specifications / Specs:

Frequency Response: 32-22,000Hz +- 3dB
Efficiency: ~92dB 1W@ 1m
Nominal Impedance:
nominal
Recommended Minimum Power amplifier rating: 15 Watts minimum


Again, all
drivers tested, work and sound fine! Tested for all frequencies with a sweep generator. Speakers cleaned inside and out. They have black cloth grills and the cabinets are a mixture of black and walnut grain vinyl wrapped. Cabinets and grills are in great shape. Grills still have all locating pins intact and frames are free of breaks / cracks etc. Each cabinet measures 24" tall x 13.5" wide x 12.25" deep and weighs 26 lbs unpacked. Includes our standard 90 day limited warranty ( & excluding problems due to under / over powering)
Technics
MCS 8320 Stereo Speakers

Condition 8.5++
with grills
(Cons.) R.R.
SOLD 11/12/18
SHIPPING TO WILLIAM IN MARYLAND


 
 (Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)


 

 

    

NEW LISTING 11/2018

 
(click on above thumbnails to enlarge photos) 
CheckMarkSmall_web.jpg (792 bytes) warranty
 
PRE-APPRECIATED
YAMAHA STEREO SPEAKERS / MONITORS
YAMAHA NS-A738 / NSA738 BIRCH FINISH
 
#...4631 / 4632 (consecutive numbers)
Circa 1999-2000
Made in the USA (yes, really)
SOLD 12/26/18
SHIPPING TO JIM IN LOUISIANA

Great looking, performing and sounding Yamaha NS-A738 3-way speakers have a room filling, "tight" sound that ensures sonic accuracy. Great for home use or project studio monitors. If you can't afford the famous Yamaha NS-10's (now, currently north of $1000.00), then these may be an affordable alternative for your project recording studio (I used to be a dealer for NS-10's and have heard and sold many).


Our speaker tech has completely gone through and 'Certified' these.
We have completely tested them with both recorded material, PN 20-20k and swept them with our AF generator. Prior to testing with the sweep generator, we added gasket material under all the driver flanges in each cabinet to eliminate resonate vibrations. This is really a 'finishing touch' on this model of Yamaha's that should have been done at the factory, but is rarely done by most companies / manufacturers. We also added 'poly-spun' batting to the cabinet space to further tighten up the low-end, eliminate hollowness / cabinet ringing. Again, should have been done at the factory, instead of relying an 'empty cab' to allow 'boomy bass' which on the original sales floor, made the box appear sonically 'larger' than it is by making the box seem to be producing more bass. The 'bass' that an un-damped cabinet produces is 'hollow and flappy', and not what you'll want to listen to over the long haul. That would be come very fatiguing soon.
Handles power decently and reproduced the low-end in our most difficult test CD! If you've read some of our other 'audition notes', you'll know what is meant when I say that these speakers, "reproduced the "TLC 'Sub-Bass' note' VERY well" when situated on the floor.

 Yamaha NS-A738 Features include:
   
- 3-Way, Acoustic Suspension design for studio monitoring "tight bass"
- 8” High-Compliance, Cloth Surround, Polypropylene Coated, Long-Throw woofer, woofer w/ non-deteriorating cloth surround
- 4” mid non-deteriorating paper surround
- .75” Ferro-Fluid Cooled, Mylar, Dome tweeter
- Infinite baffle for exceptionally tight bass

  

Yamaha NS-A738 Specifications:
  
Frequency Response:
90-20,000Hz ± 3.5dB  
Efficiency:
91dB 1W @ 1m
Nominal Impedance:
8Ω each
Cross-over frequencies:
at 4.2kHz & 13.5kHz (6dB / Octave)
Recommended Minimum Amp Size:
10 Watts
Maximum input power rating:
140 Watts
  

All drivers work and sound fine! Tested for all frequencies with a sweep generator and test CD's. Each finished in black, matte, vinyl wrap. Speakers look and sound GREAT! One of the best "all around" speakers we've heard in a long time at any size or price. Each measures 16" tall x 11" wide x 13" deep and weighs 14 lbs unpacked. Includes our standard 90 day limited warranty ( & excluding problems due to under / over powering)
YAMAHA NS-A738 STEREO SPEAKERS
Cond. 8.5+

SOLD 12/26/18
SHIPPING TO JIM IN LOUISIANA

  
 (Above text property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)
 

 

   

 

    

         NEW LISTING
11/2018

 
(click on above thumbnails to enlarge photos) 
CheckMarkSmall_web.jpg (792 bytes) warranty
 
PRE-APPRECIATED
YAMAHA STEREO SPEAKERS / MONITORS
YAMAHA NS-A738 / NSA738 BIRCH FINISH

#...2166 / 2167 (consecutive numbers)
Circa 1999-2000
Made in the USA (yes, really)
SOLD 2/20/19
SHIPPING TO TED IN ARKANSAS

Great looking, performing and sounding Yamaha NS-A738 3-way speakers have a room filling, "tight" sound that ensures sonic accuracy. Great for home use or project studio monitors. If you can't afford the famous Yamaha NS-10's (now, currently north of $1000.00), then these may be an affordable alternative for your project recording studio (I used to be a dealer for NS-10's and have heard and sold many).


Our speaker tech has completely gone through and 'Certified' these.
We have completely tested them with both recorded material, PN 20-20k and swept them with our AF generator. Prior to testing with the sweep generator, we added gasket material under all the driver flanges in each cabinet to eliminate resonate vibrations. This is really a 'finishing touch' on this model of Yamaha's that should have been done at the factory, but is rarely done by most companies / manufacturers. We also added 'poly-spun' batting to the cabinet space to further tighten up the low-end, eliminate hollowness / cabinet ringing. Again, should have been done at the factory, instead of relying an 'empty cab' to allow 'boomy bass' which on the original sales floor, made the box appear sonically 'larger' than it is by making the box seem to be producing more bass. The 'bass' that an un-damped cabinet produces is 'hollow and flappy', and not what you'll want to listen to over the long haul. That would be come very fatiguing soon.
Handles power decently and reproduced the low-end in our most difficult test CD! If you've read some of our other 'audition notes', you'll know what is meant when I say that these speakers, "reproduced the "TLC 'Sub-Bass' note' VERY well" when situated on the floor.

 Yamaha NS-A738 Features include:
   
- 3-Way, Acoustic Suspension design for studio monitoring "tight bass"
- 8” High-Compliance, Cloth Surround, Polypropylene Coated, Long-Throw woofer, woofer w/ non-deteriorating cloth surround
- 4” mid non-deteriorating paper surround
- .75” Ferro-Fluid Cooled, Mylar, Dome tweeter
- Infinite baffle for exceptionally tight bass

  

Yamaha NS-A738 Specifications:
  
Frequency Response:
90-20,000Hz ± 3.5dB  
Efficiency:
91dB 1W @ 1m
Nominal Impedance:
8Ω each
Cross-over frequencies:
at 4.2kHz & 13.5kHz (6dB / Octave)
Recommended Minimum Amp Size:
10 Watts
Maximum input power rating:
140 Watts
  

All drivers work and sound fine! Tested for all frequencies with a sweep generator and test CD's. Each finished in black, matte, vinyl wrap. Speakers look and sound GREAT! One of the best "all around" speakers we've heard in a long time at any size or price. Each measures 16" tall x 11" wide x 13" deep and weighs 14 lbs unpacked. Includes our standard 90 day limited warranty ( & excluding problems due to under / over powering)
YAMAHA NS-A738 STEREO SPEAKERS
Cond. 8.5+

SOLD 2/20/19
SHIPPING TO TED IN ARKANSAS


 
 (Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

 

    


               NEW LISTING 11/2018
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
SERVICED / REFURBISHED*
KENWOOD STEREO PRE- AMP
KENWOOD CONTROL AMPLIFIER "Basic C2"

#...0478
Circa 1984-90
SOLD 11/25/19
SHIPPED TO ELLIOT IN WASHINGTON

ü Our technician has completely gone through this unit*.

ü We have completely gone through this unit, cleaning inside and out including all contacts, switches and controls.



ü Unit originally presented with one channel down. As we've had a number of these, we knew that it was likely the "Balance" control potentiometer. It was the issue, so the pot was 'jumpered'*. Fairly 'excusable' work around as most folks are typically leaving their 'balance' control turned to the center 100% of the time anyway.
While this is a fairly versatile pre-amp, that we 'still like', it does have a few 'difficult to service' issues and a couple of 'semi-permanent' defects. Firstly there's a fairly common issue with the 'balance' control pot. It's anemic / fragile in the first place, which makes it prone to 'breaking' in such a way that it will drop channels. We have not found a replacement. There are a couple of websites that have photo essays on doing 'micro-surgery' on them, but it's very difficult, time consuming with sketchy results. Probably the most practical way to address the issue with the balance pot is to 'jumper' across it. It can either be left in place or removed once jumpered.

The same 'fix' can be utilized on the 'Headphone' level pot, then simply use the main volume of the pre-amp to control the headphone level (like EVERY other unit does).
(headphone level control still works on this unit)

ü Unit All RCA I/O jack terminal solder joints re-flowed internally





ü  All inputs tested and both side produces clean and even sine waves!

ü  No power supply hum of any kind. It's dead silent! 

ü  All inputs tested and both side produces clean and even sine waves! Checked with O-Scope.

ü  No power supply hum of any kind. It's dead silent!
  
____________________________
 
 
Versatile Kenwood "Basic C2" Pre-amp / control center. Would match up well with any power amp and is very "utilitarian". Loaded with "real world" features. Again, with the exception of the 'bypassed balance control', the unit works well and sounds great! Cosmetically the only issue really worth mentioning is that the top, metal cover has scratches from someone sitting a unit with no feet on it and moving it around.

Kenwood C2 Features include:
 
 

- Separate Bass and Treble with selectable turnover frequency
- Turnover freqs set at 200 or 400 on the bottom end and 3k or 6kHz on the top end.
- Selector for MM or MC cartridges
- 5 position phono cartridge EQ selector (this feature, combined with the MM/MC selector / head-amp alone can be worth a few hundred dollars, if you're contemplating moving up to a Moving Coil turntable cartridge. MC carts require an extra head-amp and this amplifier has one built in)
- Built-in Low and Subsonic Filters to eliminate excess rumble from sources such as turntables. These are selectable for either 58Hz, 40Hz or 18Hz @ 18dB / Oct.
- Hi "Scratch" filter set at 8Khz with a slope of 12dB / Oct. Useful for reducing the 19kHz pilot tone in FM and tape hiss / electronic hiss & noise and record static
- Output defeat
- Mono / Stereo input selector

- Phono / Turntable input with Built-In Phono Pre-Amp
- Dual Tape Monitors with bi-directional dubbing
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc. as well as for CDR)
- Dual (1 & 2) Aux inputs
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- CD Input
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Tuner input
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- "Loudness" function to boost Bass and Treble in relationship to Mid frequencies at lower volume levels for a much fuller sound.
- Headphone output with separate level control
- Indicator LED's for input selector
- 3 AC convenience outlets ( 2 switched 1 un-switched)

  
Kenwood C2 Original Specs:
  
 
Design type: 2 Channels, Analog operation
Frequency Response: 1-350kHz +0 / -3dB
Maximum Output Level: 1V
THD: 0.001% at full rated power
Phono MM Sensitivity: 2.5mV for 5.0V output @ 1kHz
Phono MM Maximum Input Level: 200mV
Phono MC Input Impedance: Selectable
S/N on Phono MM w/ 5mv signal: 94dB
Phono Capacitance: Selectable
High Level Sensitivity (tuner, Aux, Tape): 150mV

  
The Kenwood C2 has always been one of our favorite pre-amps under $600-$800. It's simply hard to beat for specs, features and performance. That is also evidenced by the fact that it was current in Kenwood's lineup, as their upper end pre, for almost half a decade. Again, we have completely gone through the unit cleaning all contacts, pots, switches and controls. All functions (again, with the exception of the 'Balance' control') test as original. Unit looks and sounds great! Unit measures 17.25" wide x 3" tall x 13" deep and weighs 10 lbs unpacked. Comes with original owners manual and includes our 90 day limited warranty.
KENWOOD BASIC C2
Condition 7.5 (due to balance control issue)

SOLD 11/25/19
SHIPPED TO ELLIOT IN WASHINGTON


(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)



 

 

    

               NEW LISTING 11/2018
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
SERVICED / REFURBISHED*
KENWOOD STEREO PRE- AMP
KENWOOD CONTROL AMPLIFIER "Basic C2"

#...0258
Circa 1984-90 
SOLD 1/30/20
SHIPPING TO STEVE IN OHIO

ü Our technician has completely gone through this unit*.

ü We have completely gone through this unit, cleaning inside and out including all contacts, switches and controls.



ü *Unit originally presented with one channel down. As we've had a number of these, we knew that it was likely the "Balance" control potentiometer. It was the issue, so the pot was 'jumpered'*. Fairly 'excusable' work around as most folks are typically leaving their 'balance' control turned to the center 100% of the time anyway.
While this is a fairly versatile pre-amp, that we 'still like', it does have a few 'difficult to service' issues and a couple of 'semi-permanent' defects. Firstly there's a fairly common issue with the 'balance' control pot. It's anemic / fragile in the first place, which makes it prone to 'breaking' in such a way that it will drop channels. We have not found a replacement. There are a couple of websites that have photo essays on doing 'micro-surgery' on them, but it's very difficult, time consuming with sketchy results. Probably the most practical way to address the issue with the balance pot is to 'jumper' across it. It can either be left in place or removed once jumpered.

The same 'fix' can be utilized on the 'Headphone' level pot, then simply use the main volume of the pre-amp to control the headphone level (like EVERY other unit does).


ü Unit All RCA I/O jack terminal solder joints re-flowed internally





ü *Unit also has an issue with the *'Hi-Filter' switch. While it has been cleaned and lubed, it will not 'lock in' so consider there's no 'Hi-Filter' on this one (yes, the circuitry still functions, but was not practical for use to source a replacement switch on this unit with the other two issues. "Hi-Filter" is also a fairly 'fringe' feature and seldom used by most folks, so we decided it was 'excusable')

ü *Unit also has the issue, common with the "Balance" control potentiometer affecting the headphone amplifier, with additional issue with the 'headphone' section, thus we have bypassed the entire headphone functions on this one.

ü All inputs tested and both side produces clean and even sine waves! Checked with O-Scope.

ü  No power supply hum of any kind. It's dead silent! 
  
____________________________
 
 
Versatile Kenwood "Basic C2" Pre-amp / control center. Would match up well with any power amp and is very "utilitarian". Loaded with "real world" features. Again, with the exception of the 'bypassed balance control', the unit works well and sounds great! Cosmetically the only issue really worth mentioning is that the top, metal cover has scratches from someone sitting a unit with no feet on it and moving it around. Also, as the 'Balance' and 'Headphone Level' are 'non-functional', we inserted hole plugs where the knobs would be (the pots are still there if anyone wants to attempt a repair in the future.)

Kenwood C2 Features include:
 
 

- Separate Bass and Treble with selectable turnover frequency
- Turnover freqs set at 200 or 400 on the bottom end and 3k or 6kHz on the top end.
- Selector for MM or MC cartridges
- 5 position phono cartridge EQ selector (this feature, combined with the MM/MC selector / head-amp alone can be worth a few hundred dollars, if you're contemplating moving up to a Moving Coil turntable cartridge. MC carts require an extra head-amp and this amplifier has one built in)
- Built-in Low and Subsonic Filters to eliminate excess rumble from sources such as turntables. These are selectable for either 58Hz, 40Hz or 18Hz @ 18dB / Oct.
- Hi "Scratch" filter set at 8Khz with a slope of 12dB / Oct. Useful for reducing the 19kHz pilot tone in FM and tape hiss / electronic hiss & noise and record static (again, NON-functional on this particular unit, #...0258)
- Output defeat
- Mono / Stereo input selector

- Phono / Turntable input with Built-In Phono Pre-Amp
- Dual Tape Monitors with bi-directional dubbing
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc. as well as for CDR)
- Dual (1 & 2) Aux inputs
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- CD Input
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Tuner input
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- "Loudness" function to boost Bass and Treble in relationship to Mid frequencies at lower volume levels for a much fuller sound.
- Headphone output with separate level control (again, NON-functional on this particular unit, #...0258)
- Indicator LED's for input selector
- 3 AC convenience outlets ( 2 switched 1 un-switched)

  
Kenwood C2 Original Specs:
  
 
Design type: 2 Channels, Analog operation
Frequency Response: 1-350kHz +0 / -3dB
Maximum Output Level: 1V
THD: 0.001% at full rated power
Phono MM Sensitivity: 2.5mV for 5.0V output @ 1kHz
Phono MM Maximum Input Level: 200mV
Phono MC Input Impedance: Selectable
S/N on Phono MM w/ 5mv signal: 94dB
Phono Capacitance: Selectable
High Level Sensitivity (tuner, Aux, Tape): 150mV

  
The Kenwood C2 has always been one of our favorite pre-amps under $600-$800. It's simply hard to beat for specs, features and performance. That is also evidenced by the fact that it was current in Kenwood's lineup, as their upper end pre, for almost half a decade. Again, we have completely gone through the unit cleaning all contacts, pots, switches and controls. All functions (again, with the exception of the 'Balance' control') test as original. Unit looks and sounds great! Unit measures 17.25" wide x 3" tall x 13" deep and weighs 10 lbs unpacked. Comes with original owners manual and includes our 90 day limited warranty.
KENWOOD BASIC C2
Condition 7 (due to balance control, headphone amp and Hi-Filter issues)

SOLD 1/30/20
SHIPPING TO STEVE IN OHIO


(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)


 

 

 

    

          NEW ADDITION 1/22/19
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED / FULLY SERVICED & WARRANTED 
PRE-APPRECIATED KENWOOD POWER AMPLIFIER
KENWOOD KM-106 / KM106 POWER AMP (same as KM-105 with different graphics)
'Military Market' / PX UNIT

500 WATT MONSTER!!!
#...1149
Circa 1985-86
MIJ

SOLD 1/30/20
SHIPPING TO STEVE IN OHIO


ü  Our technician has completely gone through and 'Certified' this unit.

ü  Unit bench checked / tested.

ü  Amp has been cleaned inside and out.

ü  Face removed, meter illumination lens removed, cleaned and reattached.

ü  All new panel illumination lamps replaced with new.

ü  All functions have been tested and pass with flying colors!

Amp designed using Huge Power Supply Transformer and oversized, vertical finned heat sink for very efficient and silent, passive cooling of output devices. All inputs tested and both side produces clean and even sine waves! No power supply hum of any kind. It's dead silent! Following restoration procedures, we burned it in, in the shop at continuous volume for 48 hours straight and it functioned flawlessly.
   

While this amp is originally rated at 125 Watts with both channels driven (250W + 250W "Peak Music Power"), on our test bench, this particular unit's (#...1149) amplifiers produced 38 Volts at 8 Ohms per channel for 180 Watts / channel and 33 Volts at 4 Ohms per channel for 272 Watts / channel via discrete output transistors (2x Sanken 2SA1215 & 2x 2SC2921. (Idle AC current draw @ .4A.
Floor noise measured at L= 00.0mVAC and R=00.0mVAC / -60dBm) 
   

Great, later model power amp by Kenwood. Model KM-106. HUGE power output! Excellent for 2-channel (stereo) audio listening or for use in an A/V system. Lots of punch and headroom.

Kenwood KM-106 Features:
   

- Old Skoool Class A/B amplifier design (NO Digital here!)
- 2- Channel stereo operation
- A or B speaker selector via high current relay
- Dual, Vertical, 7-Segment LED Power Output Meters with Dual Position Level Selector
- Built-in Protection circuit
- LED Status indicators
- Front-mounted 1/4" stereo headphone jack
- RCA input jacks
- Dual, vertical finned internal heat sink
- Oversize power supply transformer
- 3 Rear-mounted AC convenience outlets (2 switched and 1 un-switched for a total capacity of 200 Watts)

   
Kenwood KM-106 Original Specs:

 "125 Watts per channel minimum RMS, both channels driven @ 8ohms, 20-20k, with no more than 0.03% THD"
Design type:
2 Channels, AB operation
Damping Factor: >35 @ 50Hz / 8 ohms
Signal / Noise: 120dB A weighted
Rated RMS Output: 125 Watts per channel, min. RMS, @ 8Ω, both channels driven, from 20Hz to 20kHz.
Music Power 250 Watts + 250 Watts
THD:
0.03% at 'Full Rated Output'  / 8Ω w/ 20-20kHz
0.015% @ half rated power / 8Ω w/ 20-20kHz
0.002% @ half rated power / 8Ω w/ 1kHz
IMD: 0.002% @ rated power / 8Ω
Power Bandwidth: 10Hz-50kHz @ 0.03% THD @ 8Ω
Potential Frequency Response: 5Hz-200kHz
 

Again, as stated before, our technician has completely refurb'd this Kenwood KM-106, stereo Power-Amp, cleaning and testing all and it gets our full 'Certification'. Great 'all around' power amp for about any audio system. We have sold MANY of this series of Kenwood power amps over the past 2+ decades, with never a complaint. Includes an 'e-copy' pdf download of the Kenwood KM-106 owners / users / instruction manual. Unit looks, works and sounds great! Unit measures 16.5" wide x 10.5" deep x 4.75" high and weighs 18 lbs unpacked. Includes our standard 90 day limited warranty.
KENWOOD KM-106
Cond. 8.5++

SOLD 1/30/20
SHIPPING TO STEVE IN OHIO

(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 



    
    



          NEW LISTING 1/8/19
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED / FULLY SERVICED & WARRANTED 
VINTAGE MITSUBISHI POWER AMPLIFIER
MITSUBISHI DA-A10DC STEREO POWER AMP
WITH ORIGINALLY OPTIONAL MITSUBISHI DA-M10 METER BRIDGE
TRUE DUAL POWER SUPPLIES
 ONE OWNER!
MIJ

SOLD 12/20/19
SHIPPED TO RICK IN INDIANA

DC-C20, DA-M10 & DA-A10DC
(see listing to the left for details on the 'Pre-amp / Tuner')


ü Our technician has completely gone through and 'Certified' this unit.

ü Much of amplifier disassembled, the everything cleaned inside and out including all switches, controls and contacts. Cleaned and re-lubed all control shafts.



ü Internal fuses checked for correct value / function and replaced where necessary.



ü Solder joints reflowed on all possible high heat and stress points

ü Amplifier section had output bias and DC offset adjusted to spec levels after 10 min warm-up.



ü Meter Lamps replaced with correct bulbs (8V / 200mA)



ü Analog, VU / D'Arsonval Meters adjusted 'mechanically' for 'Zero' position, and electronically to match amp output.

ü All functions tested for perfect operation.

ü Following above procedures, unit was cosmetically detailed inside and out.

ü All inputs tested and both sides produce clean and even sine waves into static 8 & 4 ohm loads! No power supply hum of any kind. It's dead silent!

ü Following service / refurb procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 48 hours.
Total restoration time investment 10.5+ hours. You will not be disappointed.

On our test bench, each internal amplifier of this particular unit, #...0128, produced peak power of 31.5 Volts per channel at 8 ohms for 124 Watts per channel and 27Volts at 4 ohms for 182 Watts per channel via discrete output transistors (2X Sanken 2SA908 & 2SC1585).
AC Idle current at 450mA. Floor noise > -60dBm.
 
____________________________


Performs and sounds fantastic! All inputs tested and both side produces clean and even sine waves! No power supply hum of any kind. It's dead silent! Following restoration procedures, we burned it in, in the shop for 48 hours and it functioned flawlessly (we actually took it into our 'demo' system and 'rocked-it' HARD on our Altec VOTT's. HUGE sound and thump).

This is a Huge and Beautiful looking, performing and sounding power amplifier. Great 'High-Tech' look (in 'vintage terms anyway). Cosmetically, it looks great with only a few minor 'dings / scratches', mostly not visible from the front. The minor scratches on the front are faint and fairly 'un-noticeable' (see photos above).
While it could be used with any other pre / control amp, as they came in as a pair from the original owner, we only want them to stay together to their 'new' owner.


Mitsubishi DA-A10DC / DA-M10 Features:

- True DUAL power supplies (has a lot to do with how much this amp 'punches'. (See photos above of power supply)
- Huge, Externally located, 'vertically finned' heat-sinks
- DC protection for 'Turn-On Surge' and 'Output'
- A and / or B speaker selector
- Front mounted 'Gain / Level' controls via the Meter option on the front. Power amp has input levels on the rear panel as well (slotted heads for screw-driver)
- Huge, Beautiful, Lit VU Power Output meters
- Meter Range selector for either normal or 'x 0.1'
- 'Thermal Indicators' located on heat-sinks (think "mood ring" technology)
- Signal inputs via standard RCA jacks
- Three-pin jack for 'Mitsubishi' connector cord to Mitsubishi Pre-amp speaker switch controller


Mitsubishi DA-A10DC Specifications:

Rated RMS Output: 100 Continuous Watts per channel, min. RMS, @ 8Ω, both channels driven, from 15Hz to 30kHz.
Power Bandwidth:
10Hz to 100kHz @ 8Ω, both channels driven
Signal to Noise Ratio: 107dB un-weighted (closed input), 122dB (20Hz to 20kHz) at full RMS output (closed input)
Total Harmonic Distortion (THD): <0.01% @ rated output, <0.005% @ half output
IMD: 0.008% @ rate
d power / 8Ω
Slew Rate:
30V/μsec @ 8 Ohms / 50V P-P
Damping Factor: 100 @ 8 Ohms / 20Hz to 20kH
Load Impedance: Rated for 16, 8 or 4
Ohm use
Input Impedance: 50k Ω nominal
Input Sensitivity: 1V for rated power into 8Ω
Channel Separation: 1
00 dB @ 1kHz and 80dB @ 20kHz
Input Connector: Standard RCA jacks

Again, as stated before, we have completely gone through this
Mitsubishi DA-A10DC
, Power Amplifier cleaning and testing all and it gets our full 'Certification'. This is an amazing performing and sounding amp. We have 'stood on it' hard, with a number of our speaker loads (the most fun being when connected to our Altec 'Voice of the Theaters'. It's a huge sounding and punchy amp, with lots of 'head room'. Handles 'REAL' high power levels perfectly well. If you are looking for serious, vintage power, it ain't gonna get much better than this.
Also includes the original 3-pin, umbilical speaker control cable for connecting the power amp to the speaker selection section of the pre-amp.

 Comes with an e-copy, pdf download, of the
Mitsubishi DA-A10DC Owners Manual and Service Manual.
Measures standard 17" wide x 15" depth x 6.75" tall and weighs 46 lbs unpacked. Total weight of all three components is 65 lbs. Includes our standard 90 day limited warranty.
Mitsubishi DA-A10DC Power Amplifier / DA-M10 Meter / Control panel.
 Cond. 8.5
+
all three components
SOLD 12/20/19
SHIPPED TO RICK IN INDIANA

DC-C20, DA-M10 & DA-A10DC
(see listing to the left for details on the 'Pre-amp / Tuner')

(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)


 

 



    




          NEW LISTING 1/8/19
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED / FULLY SERVICED & WARRANTED 
VINTAGE MITSUBISHI STEREO PRE-AMPLIFIER / AM/FM TUNER
MITSUBISHI DA-C20
DUAL MONO CONSTRUCTION

 #...0324
Circa 1978-'80
MIJ

SOLD 12/20/19
SHIPPED TO RICK IN INDIANA

DC-C20, DA-M10 & DA-A10DC
(see listing to the right for details on the 'Power Amp / Meter bridge')


 
ü  Our technician has completely gone through and 'Certified' this unit.

ü Following ext / int visual inspection entire unit was cleaned inside and out including all contacts, switches and controls (VERY difficult to access. Requires complete tear down to clean controls properly).



ü Meters calibrated per service manual.

ü Switches and controls now clean sounding and performing solidly.

 
ü All functions tested for perfect operation.

ü All inputs tested and both side produces clean and even sine waves!

ü No power supply hum of any kind. It's dead silent!

ü Following electronic refurb, entire unit was cosmetically detailed (as it 'practically' allowed).

ü We also aligned the tuner front-end on both AM & FM bands for optimum performance as older tuner components will have 'drifted' over the years.

ü AM 'Stick' ferrite core adjusted for optimum reception and minimal noise

ü AM 'Stick' antenna 'ball and socket' inspected and is holding well.

ü Tuner string checked for any fraying then re-tensioned to increase traction & relieve flywheel binding and re-centered pointer to correct dial position.

ü VERY GOOD TUNER! Generally AM reception in a stereo receiver is treated as an 'after thought', but the AM reception on this one is WAY above average. Pulls in stations like an old 'Tube' radio! FM reception also incredible and IMPECCABLY CLEAN!!!

ü Following service / refurb procedures, the unit was ran continuously at medium volume, as all our amplifier / receivers are, into a 4 Ohm load with "Loudness" on and both Tone Controls at 10 for 48 hours.
Total restoration time investment
11+ hours. You will not be disappointed.

 
Very classy 'Pewter / Silver' face Mitsubishi Pre-Amp / Tuner. VERY impressive in stature and cosmetics. Looks great with matching Meter Bridge attached to Mitsubishi power amp. Cosmetically it's in BEAUTIFUL condition with only items worth mentioning would be some light finish scuffing on one end from being set on it's side (not visible from front of unit) and the word "Power" missing all but the "P" from the silk screening above power switch (see photos above).


Mitsubishi DC-C20 AM/FM Tuner / Pre-Amp Features and 'Creature Comforts' include:


-True Dual Channels w/ separate L & R Tone / Output levels
- Delay power On / Power Off sequencing when connected to power amplifier
- Speaker selector for A or B, A+B or Off (when connected to amplifier via proper umbilical cord)
- Subsonic filter with 18Hz cut-off built-in for cutting turntable rumble
- Super quality de-tented Attenuator (volume) control
- Separate L & R Tone Defeat for purest tone path if so desired
- Separate L & R Bass and Treble with high quality de-tented controls
- Pre-amp section 'Stereo / Mono' / Reverse Stereo selector
- Dual tape deck monitors (Tape Monitors can be used with Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
- Bi-Directional Tape Duplication
- Dual Phono / Turntable inputs w/ 'Built-in' phono pre-amp for MM or MC
- Tuner input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRUS® etc.)
- AUX input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRUS®, audio mixers, computer sound-cards etc.)
- Analog / D'arsonval Signal Strength meter
- Analog / D'arsonval Center Tune meter
- Wide / Narrow Band selector for Tuner
- Tuner 'Lock' for drift-free reception
- FM Mute / Stereo / Mono selector
- Vertical and Horizontal Multi-path RCA outputs
- Front mounted 1/4" stereo headphone jack
- Side panel features full RCA patch bay for all inputs (each 'fastened separately' to the rear panel, and 'point to point' wired internally, instead of being soldered directly to the circuit board, which is always a 'failure point').
- 3-Pin connector for amplifier umbilical speaker connectors for A&B speakers

-
2 Switched and 1 un-switched AC outlets for a maximum load of 900 Watts of external gear.

 
Mitsubishi DC-C20 AM/FM Tuner / Pre-Amp Original Specifications:

TUNER SPECS:
Tuning Capacitor:
5-
gang
Tuning Range:
88-108MHz
Freq Response: 30-15kHz (FCC Limits)
Useable Sensitivity: Mono 11.2 dBf / 2.0 μV
Stereo 22.7 dBf / 7.5 μV
50dB Quieting Sensitivity: Mono 19.2 dBf / 5.0 μV
Stereo 39.2 dBf / 50 μV
S/N @ 65dBf: >80db Mono or 75dB Stereo
Capture Ratio @ 65dBf (Wide / Narrow): 0.8 dB / 1.5 dB
THD Mono @ 1kHz: 0.05% (Wide)
THD Stereo @ 1kHz: 0.08% (Wide)
FM Alternate Channel Selectivity (Wide / Narrow): 45dB / 75dB
Spurious Noise Ratio: 90dB
IF Response Ratio: 80dB
AM Suppression: (Wide / Narrow): 55dB / 50dB
Stereo Separation (Wide / Narrow): 45dB @ 1k & 35dB @ 10kHz / 40dB @ 1k & 30dB @ 10kHz
Subcarrier Product Product Ratio: 70dB
Image Response Ratio: 80dB
Antenna Impedance: 75 or 300 Ohms

TUNER SPECS FOR AM (IHF):
Tuning Range: AM Band 525 kHz-1605 kHz
S/N: 
>50db
Useable Sensitivity (IHF Bar Antenna): 45 dB
Selectivity: 30dB @ 1kHz
Hum & Noise: 50dB
THD: 0.8%
IF Response Ratio: 70dB
Image Response Ratio: 40dB


PRE-AMP SPECS:
S/N (IHF): 110dB for 'non-phono' inputs
THD: 0.003%
across 20-20kHz @ rated attenuator output of -20dB
Freq Response (non-phono inputs): 10Hz-100kHz at full rated power
Input Sensitivities 'non-phono' inputs for full rated output:
150mV / 50kΩ via RCA's
Output at Main Output: 1V for 'rated output' @ 600 Ohms
Output at Tape Monitors: 150mV / 600 Ohms via RCA's
Bass Control:  ±10dB @ 100Hz
Treble Control:  ±10dB @ 10kHz
Subsonic Filter:  -6dB / oct @ 18Hz

Output at Headphones: 600mV
(at output of 1V) / 15 Ohms. 650mV max.
 
Phono Section:

Freq Response: 20Hz-20kHz RIAA EQ
S/N: MM= 84dB (Shorted)
MC= 77dB (terminated w/ 47 Ohms)
Phono THD: MM= 0.003% @ 20-20kHz
MC= 0.005% @ 20-20kHz
Phono MM Sensitivity: 2.5mV / 50k Ohms / 10pF
Phono MC Sensitivity: 0.1mV / 10 Ohms
Phono Maximum Input Level: MM= 290mV RMS while still maintaining 0.1% THD @ 1kHz
MC= 12mV RMS while still maintaining 0.1% THD @ 1kHz

 
Again, as stated before, our technician has completely refurb'd this
Mitsubishi DC-C20 AM/FM Tuner / Pre-Amp
, cleaning and testing all and it gets our full 'Certification'. Entire unit, including the original brushed aluminum, Face and knobs are in beautiful condition. Unit looks beautiful and sounds great. This is the first 'complete combo' of these components we've had.
Comes with an 'e' copy / pdf download of the original Mitsubishi DC-C20 AM/FM Tuner / Pre-Amp users manual and service manual if purchaser so desires. Also includes the original 3-pin, umbilical speaker control cable for connecting the power amp to the speaker selection section of the pre-amp.

Measures 16.75" wide x 11.5" deep x 6.75" tall and weighs 19 lbs unpacked.
Total weight of all three components is 65 lbs. Includes our 90 day limited warranty!
Mitsubishi DC-C20 AM/FM Tuner / Pre-Amp

Cond. 8.5+++
all three components
SOLD 12/20/19
SHIPPED TO RICK IN INDIANA

DC-C20, DA-M10 & DA-A10DC
(see listing to the right for details on the 'Power Amp / Meter bridge')


(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)


 
 



     


               NEW LISTING 1/11/19
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED / FULLY SERVICED / WARRANTED
VINTAGE PIONEER STEREO INTEGRATED AMPLIFIER
PIONEER SA-7500 / SA7500

MIJ
Circa 1976-78

SOLD 3/17/19
SHIPPED TO STEVE IN CONNECTICUT

ü  Our technician has completely gone through and 'Certified' this unit.

ü  Everything was cleaned inside and out including all switches, controls and contacts. Cleaned and re-lubed all control shafts.

ü Internal fuses checked for correct value / function and replaced where necessary.

ü  Solder joints reflowed on all possible high heat and stress points

ü  Amplifier section had output bias and DC offset adjusted to spec levels after 10 min warm-up.

ü  All functions tested for perfect operation.

ü  Following above procedures, unit was cosmetically detailed inside and out.

ü 
Surface corrosion painstakingly removed from all RCA I/O jacks and binding post flanges

ü  All inputs tested and both sides produce clean and even sine waves into static 8 & 4 ohm loads! No power supply hum of any kind. It's dead silent!

ü  Following restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 48 hours. (Technicians note, "this is a very 'tech friendly & serviceable' amplifier design")
Total tech time 7 hours.


On our test bench, each internal amplifier of this particular unit, #...328M, produced peak power of 21 Volts per channel at 8 ohms for 55 Watts per channel and 17 Volts at 4 ohms for 76 Watts per channel via TO3, metal cased, discrete output transistors (2x 2SB541 & 2SD388).
DC offset set to 0 mVDC both channels w/ 5.1k Ohms shorting plugs. Bias set to correct 30mVDC

AC Idle current at 200mA. Floor noise >-60dBm.
 
____________________________
 

Great performing, sounding and Versatile, Pioneer SA-7500 integrated amplifier. Great amp for 2-channel stereo systems up to medium-large and "recording studio" use. "Real" output transistors and substantial power supply! Just a great 'all-around utility' amplifier for probably more than 80% of the audio systems out there.

Pioneer SA-7500 Features:
 

- Speaker selector for A or B, A+B or Off 
- Super quality volume attenuator
- Separate Bass and Treble with high quality
de-tented potentiometers
- Tone-Defeat feature. Bypasses tone control circuitry for purest signal path
- Bass Tone control center selectable for either 200Hz or 400Hz
- Treble Tone control center selectable for either 2.5kHz or 5kHz-
 Built-in Low / Sub-Sonic filter for cutting turntable rumble / feedback
- Built-in High filter for reducing 19 kHz FM pilot tones and tape hiss and AM noise
 - Instant -20dB Audio-Muting / Volume attenuation
- Dual tape deck monitors with 'Tape-2' having a DIN as well as RCA I/O's. (Tape Monitors can be used with Tape decks such as Cassette Tape Recorders/ Players, Reel to Reel's, 8-Track Tape Cartridge Decks, Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
- Tape Dubbing Capability
- Dual Phono / Turntable inputs w/ built-in Phono Pre-Amp
- AUX Input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Tuner input (can also be used for ( Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® etc. inputs)

- Stereo Mode switch for Stereo / Mono-Mix / Stereo-Reverse, L or R selector (very handy for trouble-shooting system and speakers
- Front mounted 1/4" stereo headphone jack
- Rear mounted, 1/4" microphone input
- Pre-Amp out / Power-Amp In RCA loop to connect the pre-amp to a larger power or an 'additional' power amp, or to use the 'power-amp' with another system such as in a small PA system.
- Triple AC convenience outlets with 2 switched and 1 un-switched for a total capacity of 200 Watts of accessories

 
Pioneer SA-7500 Specifications:
 
 
Output: Continuous 40 Watts per channel, min. RMS, at 8 Ohms & 45 Watts per channel, min. RMS, at 4 Ohms, both channels driven, from 20Hz to 20kHz.

Design type: 2 Channels, Integrated Pre /
 Class A/B operation Power Amplifier
Damping Factor: >25@ 20-20kHz into 8Ω

THD: 0.3% at full rated power into 8
Ω w/ 20-20kHz & 0.05% @ half power (20 WPC)
Freq Response of power amp: 10Hz-80kHz
Freq Response of Pre-amp: 10Hz-50kHz

S/N: 90dB for Tuner, Tape and AUX inputs
Bass Control:  ±7dB / ±11dB @ 100Hz
Turnover selectable 200Hz / 400Hz
Treble Control:  ±7dB / ±11dB @ 10kHz
Turnover selectable 5kHz / 2.5kHz
Subsonic Filter:  -6dB / oct @ 30Hz
High Filter:  -6dB / oct @ 8kHz

Loudness Control: +8dB @ 100Hz & +4dB @ 10kHz (-40dB Vol Level)

Input Sensitivities: Non-Phono inputs = 150mV / 50kΩ
Input Sensitivity Power Amp: 1V / 50kΩ
Tape outputs: 150mV
Pre-Amp
outputs: 1V
M
icrophone Sensitivity Power Amp: 7.5mV
/ 85kΩ

PHONO SECTION SPECS:
Freq Response:
30Hz-15kHz w/ RIAA Equalization of ±0.3dB
S/N: >70dB
Input Sensitivity: 2.5mV @ 50kΩ
Phono Overload: 200mV

 
Again, we have complete gone through and tested all functions of this unit. It sounds incredible. Unit looks great with only slight, minor cosmetic issues to the face (see lower right photos above). All functions test perfectly and it sounds great! Again, great amp for medium to med-large audio systems, and where someone needs a 'solid' amount of features without 'fluff'. Comes with an 'e-copy', PDF download of the Pioneer SA-7500 owners / users / instruction manual and the service manual if the purchaser desires. Measures 16.5" wide x 13.5" deep x 5.75" tall and weighs 27 lbs unpacked.
PIONEER SA-7500
Cond. 8.5

(Cons. M.H.)
SOLD 3/17/19
SHIPPED TO STEVE IN CONNECTICUT
 


(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

 

    

               NEW LISTING 12/18/18
 (Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes)  warranty
VINTAGE & FULLY SERVICED WITH WARRANTY
KENWOOD PRE-AMP / CONTROL AMPLIFIER
KENWOOD BASIC C-1

#...0534
  
Circa '84
Made in Japan

SOLD 2/28/19
SHIPPED TO MARK IN CALIFORNIA

ü Our technician has completely gone through this unit.

ü We have completely gone through this unit, cleaning inside and out including all contacts, switches and controls.

ü Unit All RCA I/O jack terminal solder joints re-flowed internally





ü Unit cosmetically detailed, but does have a few scratches on the metal case /cover

ü All functions tested for perfect operation.

ü All inputs tested fine following I/O re-flow operation

ü Both sides produce clean and even sine waves!

ü No power supply hum of any kind. It's dead silent! 
  ____________________________
  
  
Great 'utilitarian' pre-amp (in fact, while waiting 4 years for two missing knobs to show up, we've been using it here on a number of systems so I'm VERY familiar with it). GREAT sounding as well. Check out the 108dB S/N!!!
Kenwood C-1 Pre-amp / control center. 

  
Kenwood C-1 Features include:
  
- Separate Bass and Treble Controls
- Variable Loudness (Not just a push switch for On / Off)
- Dual tape monitors with A>B dubbing
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- AUX / CD
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Tuner input
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Phono / Turntable input with Built-In Phono Pre-Amp
- Selector for MM or MC cartridges as it has a built-in Moving Coil Head Amp (that's worth the 'price of admission' if you need it)
- Subsonic filter for reducing turntable rumble / feedback

- Loudness
- Indicator LED's for input selector
- 3 AC outlets ( 2 switched 1 un-switched) for a total capacity of 300 watts

Kenwood C1 Original Specs:
  
 
Design type: 2 Channels, Analog operation
Frequency Response (non-phono input): 1-250kHz +0 / -3dB
Maximum Output Level: 5V

THD Tuner, AUX and Tape, 20-20,000Hz: 0.004% @ 1V output
Signal / Noise Ratio: 108dB!!! @ Tuner, Aux, Tape A/B inputs
Input Sensitivity AUX / Tape @ RCA's: 150mV @ 47k Ω @ 1kHz for rated output

Output AUX / Tape @ RCA's: 150mV @ 47k Ω
Subsonic Filter: >-3dB @ 30Hz, 6 dB/Oct
Loudness Control: 0-+9dB continuously variable (-30dB Vol Level)


PHONO SECTION SPECS:
Freq Response: RIAA Standard curve
30Hz-20kHz w/ RIAA deviation of ±0.3dB
S/N: >87dB MM, >70dB MC

THD Phono MM or MC, 20-20,000Hz: 0.005% @ 1V output

Input Sensitivity (nominal) MM: 2.5mV @ 47
Input Sensitivity (nominal) MC: .25mV @ 100Ω
Phono Overload for MM: 200mV yields THD 0.005% @ 1kHz
Phono Overload for MC: 15mV yields THD 0.005% @ 1kHz

  
This is a great control pre-amplifier for if you just need a good 'utilitarian' pre-amp (but with a built-in MC Head Amp). Perfect for basic control of system. Unit looks and sounds great! Unit measures 17.25" wide x 3" tall x 13" deep and weighs 10 lbs unpacked. Includes our standard 90 day limited warranty.
KENWOOD BASIC C-1
Cond. 8.5

SOLD 2/28/19
SHIPPED TO MARK IN CALIFORNIA

 
(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)


 
 

 

   

 


     


         NEW LISTING 5/1/19
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED /
FULLY SERVICED & WARRANTED
OLD-SCHOOL, 2-CHANNEL STEREO
VINTAGE PIONEER STEREO INTEGRATED AMPLIFIER
PIONEER SA-9100 / SA9100
#...540M
Circa 1973-75 
"WORLD AC POWER"
MIJ
SOLD 9/25/19
SHIPPED TO JEREMY IN CALIFORNIA
 
 

ü  Our technician has completely gone through and 'Certified' this unit.

ü  Everything was cleaned inside and out including all switches, controls and contacts. Cleaned and re-lubed all control shafts.

ü Internal fuses checked for correct value / function and replaced where necessary.

ü Original issues were 'early clipping' on Right channel 'Positive' peak (visible on Oscilloscope), Quite high DC at speaker outputs, the AWR-032 power supply board that had completely wrong Voltage values on one side and a 'popping' 'Tone Defeat' and 'Filter' Switch circuit boards (AWK-021 & AWS-040) (most rectified following below service).

ü Replaced 20+ electrolytic capacitors as well as some transistors and resistors

ü Solder joints reflowed on probable high heat and high stress points

ü New 8V lamps installed (#25-140)

ü Following 10-min warm-up Amplifier section had output bias and DC offset adjusted to spec levels

ü All functions tested for perfect operation.

ü Following above procedures, unit was cosmetically detailed inside and out.

ü All inputs tested and both sides produce clean and even sine waves into static 8 & 4 ohm loads! No power supply hum of any kind. It's dead silent!

ü Following restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 48 hours. (Technicians note, "this is a very 'tech friendly & serviceable' amplifier design")
Total tech time
25+ hours.

   
While this unit was originally rated at 60 WPC @ 8Ohms, on our test bench, the internal amplifiers of this particular Pioneer SA-9100, Integrated Amplifier, #...1869, produced 24+ Volts per channel for 75+ Watts per channel at 8 Ω and 20+ Volts at 4 Ω for 100 Watts per channel via discrete, metal cased, TO-3 style outputs @ 1khz. (2x Toshiba 2SA679 & 2x Toshiba 2SC1079 devices)
(Idle Mains AC current draw @ 420 mA.
Bias set to spec / 25mVDC
DC offset brought from 80 & 105 mVDC to <2mVDC following power supply circuit board rebuild and driver board refurb

 Floor noise measured at L= 3mVAC and R=3mVAC)

   ____________________________
  
Powerful and Versatile, Pioneer 'Flagship' for 1973, the SA-9100 integrated amplifier. This is one of the most 'meticulous' built amps out of Japan we have seen. Incredibly well designed and built. Great amp for serious 2-channel, home-audio and "recording studio" use. "Real" TO-3 outputs and HUGE power supply!

Pioneer SA-9100 Features include:
  

- Very well built output section and serious power supply 
- Speaker selector for A or B or C, A+B, A+C or Off 
- Incredible 'Single-Ended / Push-Pull' EQ circuit that is physically 'fully shielded'
- Separate Bass and Treble with high quality, de-tented controls utilizing "fixed resistors and capacitors" at 2dB intervals, as opposed to typical carbon trace. This is a VERY expensive style of potentiometer to design into a unit. They are not prone to the "scratchiness" / dirt that most variable resistors are.
- Dual Bass controls centered at 50Hz and 100Hz
- Dual Treble controls centered at 10kHz and 20kHz
 - Tone-Defeat feature. Bypasses tone control circuitry for purest signal path
- Built-in Low / Sub-Sonic filter for cutting turntable rumble. Center selectable for either 'Subsonic' 8Hz or Low-Cut 30Hz
 - Built-in High filter for reducing 19 kHz FM pilot tones and tape hiss. Center selectable for either 8kHz or 12kHz
- Triple-Range Attenuation selector for volume pot to allow 'finer' adjustment
-Rear located controls for adjusting the levels between 'AUX-2', 'Phono-2' & 'Speaker-2' for 'comparative' listening tests
- Instant Audio-Muting for either-15dB or-30dB attenuation
- Dual tape monitors
(Tape Monitors can be used with Tape decks such as Cassette Tape Recorders/ Players, Reel to Reel's, 8-Track Tape Cartridge Decks, Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
- Tape 'Duplicate' / dubbing capability
- Dual AUX Inputs
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
 - Tuner input
(may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Dual Phono / Turntable inputs with Built-In Phono Pre-Amp
- Phono impedance selectable for either 25, 50, or 100kΩ
- Stereo Mode switch for Stereo / Mono-Mix / Stereo-Reverse, L or R selector
- Speaker output protection circuit (not just a fuse as is typical in 'Vintage' gear)
- Front mounted 1/4" stereo headphone jack
 - Pre-Amp out / Power-Amp In RCA loop with built-in Connect / Separation switch.
- Triple AC outlets ( 1 switched, 2 un-switched) for a total capacity of 200 Watts
- True "
WORLD AC POWER"™ allows unit to be operated on 50 or 60 Hz AC and will select voltages from 110v, 120v, 220v and 240 Volts AC input.

  

Pioneer SA-9100 Original Specs:

   

Design type: 2 Channels, Integrated Pre /
 Class AB operation Power Amplifier.
"2-Stage Differential Amplifier, Direct Coupled, Pure Complementary OCL"
Rated Power output: 60 WPC min RMS @ 8 Ohms & 75 WPC min RMS  @ 4 Ohms and < 0.1% THD across 20-20kHz
(75Wpc and 100Wpc at 8 & 4 Ohms w/ 1kHz)

Damping Factor:
>70 @ 20-20kHz into 8Ω
THD & IMD; 0.1% at full rated power into 8Ω w/ 20-20kHz @ 0.04% @ 1W
Freq Response: 7Hz-80kHz at full rated power
 / Power Bandwidth = 5-40kHz
S/N:
>95dB for 'Power Amp' inputs

Input Sensitivity Power Amp: 500mV @ 50k Ohms

PRE-AMP SECTION SPECS:

Pre-Amp Output (full output): 2V @ 8 Ohms
S/N: 93dB for Tuner, Tape and AUX inputs
Input Sensitivities 'Tuner, AUX 1 and Tape' inputs: 150mV / 100KΩ
Input Sensitivities AUX 2: 150mV to 1.5V /
50kΩ or 100kΩ
Microphone: 2.0mV @ 50k Ohms
Mic input Freq Response: 10Hz-10kHz
Bass Control (main); ±10dB @ 100Hz
Bass Control (sub); ±6dB @ 50Hz
Treble Control
(main); ±10dB @ 10kHz
Treble Control (sub); ±6dB @ 20kHz
Subsonic Filter: 8Hz, 12 dB/Oct
Low
Filter: 30Hz, 12 dB/Oct
High Filter: 8kHz or 12kHz, 12 dB/Oct

Loudness Control: +10dB @ 100Hz (-40dB Vol Level)

  

 Phono Section:
Freq Response: 30Hz-15kHz w/ RIAA Equalization of ±0.3dB
S/N: >80dB w/ 5mV signal input

Phono 1 / MM Sensitivity: 2.5mV / 50
Ω
Phono 2 Sensitivity: 2.5mV-10mV / 25
Ω, 50kΩ or 100kΩ
Phono MM Maximum Input Level: 250mV RMS / 700mV P-P

 

Again, we have complete gone through and tested all functions of this unit. The only thing we weren't able to completely address, was the 'popping' on the 'Tone Defeat' and 'Filter Switches'. We improved it to a tolerable level on the 'Filter Switches'. The 'Tone Defeat' switch still pops, but as it's a switch that is typically 'set and left', we did not want to invest the additional resources to rectify, thus having to reflect it in higher final price. We felt that was the best decision.
Overall, the unit
sounds incredible. This is only the second of this model we have had in 20+ years of being on the web! This is an incredible amp and way better built and more versatile than most we've seen marketed since it's 1973 introductory date. Internally designed and built with very expensive, 5% & 1% tolerance resistors and +/- 2% tolerance capacitors throughout! That was fairly 'unheard of' at the time for most audio gear being generally reserved for TOTL models. Our 'tech' first noticed that while doing it's 'workup' and made note on the worksheet, then we read about it in the owners manual. Unit looks fabulous after detailing. Original brushed aluminum face and all original 'milled' aluminum knobs look near new. Only 'barely mentionable' cosmetic issue are some small, 'moisture' stains on the wood case top (see photos above). Real Walnut Wood veneer case just had a fresh coat of Howards Feed-n-Wax and looks great! Again, all functions test perfectly after our service work and it sounds great!
Comes with an 'e-copy', PDF download of the Pioneer SA-9100 owners / users / instruction manual and the service manual if the purchaser desires. Measures 17" wide x 13.5" deep x 5.5" tall and weighs 34 lbs unpacked.
Comes with our 90 day limited warranty.
PIONEER SA-9100 INTEGRATED STEREO AMPLIFIER
Cosmetic Cond. 8.5+

SOLD 9/25/19
SHIPPED TO JEREMY IN CALIFORNIA
(Cons. M.H.)


(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)
  

 

    

          NEW LISTING 11/2018
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
FULLY SERVICED / BENCH TESTED
HAFLER STEREO POWER AMPLIFIER
HAFLER 9180
 #...1277
 Circa 19
91-94
SOLD 3/2/19
SHIPPED TO BRIAN IN TEXAS


ü  Our technician has completely gone through and 'Certified' this unit cleaning contacts, controls and pots.

ü  Amp has been cleaned inside and out.

ü  We replaced the AC power input jack.

ü  Internal fuses checked for correct values and function

ü  Bias and DC offset set correctly.

ü  All functions have been tested and pass with flying colors!

Amp designed using Huge Power Supply Transformer and super quality (expensive) filter caps. Externally located, vertically finned heat sink for very efficient and silent, passive cooling of output devices (all amps / receivers should be designed this way). This amplifier is in both great electronic and physical shape. Looks LIKE NEW and sounds fantastic! All inputs tested and both side produces clean and even sine waves! No power supply hum of any kind. It's dead silent! Following restoration procedures, we burned it in, in the shop at continuous high volume for 8 hours straight and it functioned flawlessly.
Technician's note:
"this amp was final evolution of the DH-220's. VERY good build quality"
   
On our test bench, this unit's (#...1277) amplifiers produced 32+ Volts at 8 Ohms per channel for 128 Watts / channel and 28+ Volts at 4 Ohms per channel for 210 Watts / channel via discrete output transistors (DC out adjusted to less than 9mV per channel. Floor noise < 0.1mVAC. Idle AC current draw @ .86A)
   
Great "general purpose" power amp for a variety of consumer and Pro-Audio applications. Super quiet operation and build quality. We run it's little brother in our main demo system and have for years. Love it!!! Great for full range stereo speakers, Studio Monitors, stage monitors, wedge monitors or running drivers in a Bi-Amp / Tri-Amp system.
For you 'tech-savvy' types, here's an excerpt from the original manual regarding amp architecture and 'Mono-mode',
"
The input stage of the 9180 Amplifier utilizes four low-noise, High-g, JFET’s (high trans-conductance junction field-effect transistors), in a fully complimentary, symmetric configuration. This circuit configuration results in excellent front-end headroom and a simple, straightforward connection to the remainder of the circuitry. The ultra low noise characteristics of the JFET’s virtually eliminates noise “mixing” (inter-modulation) with the music signal, reducing discordant product frequencies known as “noise grain”, or “noise fuzz”.

    The input stage is cascade connected to convert the low voltage input system to the high voltage output system, and “speeds up” the front end for superior bandwidth. The cascade stage is connected to an emitter-follower and current mirror configuration that amplifies the current level about ten times, necessary to drive the biasing string and final output stage driver emitter followers.
    
The final output stage uses multiple lateral MOSFET’s (Metal Oxide Semiconductor Field Effect Transistors): four devices per channel in the 9180. These devices, unlike conventional bipolar transistors, have a negative temperature coefficient, which means that they do not exhibit “thermal runaway”. Thermal runaway is a phenomenon whereby a transistor heats up as it conducts more current, which causes it to get hotter, and conduct more current, and so on, until the device self-destructs. Since MOSFET’s are inherently self-protecting, no sonically degrading, complex circuitry is required to monitor and protect the output devices.
     Furthermore, these lateral MOSFET’s exhibit a very linear input to output transfer function. Their connection in circuits and operating characteristics are very similar to vacuum tubes, which is perhaps responsible for their widely recognized sonic trait of being very “musical” and non-fatiguing.

     Conversion to Mono Mode is accomplished by driving the negative input (feedback point) of the right channel with the output of the left channel. This causes the right channel to mirror exactly the output of the left channel, but 180 degrees out of phase. This creates twice the voltage swing to be available across the two red output binding posts. This simple method of bridging the amplifier (involving only
one resistor) eliminates the costly and sonically degrading invertors circuitry used in other amplifiers."

 

HAFLER 9180 FEATURES:

  

- Stable down to 2 Ohms!
*

- Two Channel or 'Bridged Mono' Operation
- Very Large Area dedicated to heat dissipation via, Vertically mounted, external heat sinks that cover 66% of the rear panel and almost 100% of each side.
- 'Soft Turn-On / Turn-Off' protection against "turn-on / turn-off" transients
- Thermal protection
for amplifier
- Variable Input level controls on front panel
- RCA input signal I/O's, Gold Plated
- Speaker outputs via 5-Way binding / banana posts
- Discrete output transistors
- Huge power transformer and filter capacitors 75V / 15,00
0
μF

  
 Unit looks near new, performs and sounds great!
  
HAFLER 9180 ORIGINAL SPECIFICATIONS / SPECS:
  

-Stable down to 2 Ohms!
(
*in certain circumstances ie: limited times / frequency range /
 power output. We wouldn't recommend constant 2 ohm load personally for very many amps)
Sensitivity (for 105 watts @ 8 Ohms): 1.4 VRMS

THD: 0.005% @ 1kHz, 0.025% @ 8 ohms, 20Hz - 20kHz
Power Bandwidth: 0.3Hz to 116Hz

S/N: >100dB @ 105 Watts @ 8
Ω un-weighted
Slew Rate: 50V / μsec
Damping Factor: >300 to 1k / 8
Ω & >200 to 10k / 8Ω


Input Impedance: 47k ohms unbalanced
Connectors (each channel): Input: RCA. Output: 5-way binding posts
Cooling: Convection (
Vertically mounted, external heat sinks, wrapping nearly 70% of the way around the amp.)
Amplifier Protection: Full thermal
Speaker
Protection: 'Soft Turn-On / Turn-Off'
Power Consumption: 100W @ 'quiescent' and 1200 Watts max
  

Rated Output Power (per channel):
Continuous Average Output Power Both Channels Driven:
8 ohms, 20Hz - 20kHz, 0.025% THD: 105
Watts
  
Again, we have completely gone through the unit cleaning and testing all. On our test bench, both amplifiers produce perfectly clean and symmetrical sine waves at both 8 & 4 ohm loads. Includes an 'e-copy' pdf download of the Hafler 9180 owners / users / instruction / service manual. Measures 17" wide x 12.5 deep x 4" tall and weighs 33 lbs unpacked. Includes our standard 90 day limited warranty.
HAFLER 9180
Cond. 9

SOLD 3/2/19
SHIPPED TO BRIAN IN TEXAS

 
(Cons.) R.R.
 
 
(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)
 
 

 

    

NEW LISTING 1/11/19
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED / FULLY SERVICED / WARRANTED
VINTAGE SANSUI STEREO INTEGRATED AMPLIFIER
SANSUI AU-317 / AU317
#...0583

MIJ
"WORLD AC POWER"
Circa 197
8-80 

SOLD 2/28/19
SHIPPED TO MARK IN CALIFORNIA


ü Our technician has completely gone through and 'Certified' this unit.

ü Everything was cleaned inside and out including all switches, controls and contacts. Cleaned and re-lubed all control shafts.

ü Internal fuses checked for correct value / function and replaced where necessary.

ü Solder joints reflowed on all possible high heat and stress points

ü Amplifier section had output bias and DC offset adjusted to spec levels after 10 min warm-up.

ü All functions tested for perfect operation.

ü Following above procedures, unit was cosmetically detailed inside and out.

ü All inputs tested and both sides produce clean and even sine waves into static 8 & 4 ohm loads! No power supply hum of any kind. It's dead silent!

ü Following restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 48 hours. (Technicians note, "this is a very 'tech friendly & serviceable' amplifier design")
Total tech time 5+ hours.

On our test bench, each internal amplifier of this particular unit, #...0583, produced peak power of 22 Volts per channel at 8 Ohms for 60 Watts per channel and 19 Volts at 4 Ohms for 90 Watts per channel via discrete, TO-3 / Metal Cased output transistors (Sanken 2x 2SA745 & 2x 2SC1403).
AC Idle current at 200mA. Bias set to correct 10.0mVDC. DC offset adjusted to a SUPER LOW 0 mVDC L&R & floor noise > -60dBm.
 
____________________________

 Very classy matte-black, Sansui AU-317 integrated amp. Huge, internal power supply and 'REAL' output transistors for lots of warmth and tone! Great, all-around amp for home or project recording studio.
Sansui AU-317 Features include:
 
- True Discrete Output, Class A/B amplifier
- Speaker selector for A or B, A+B or Off
- Super quality de-tented volume control
- Separate Bass and Treble with high quality de-tented controls
- "Tone By-pass" for the purest signal path

- Loudness control. "Loudness" functions to boost Bass in relationship to Mid frequencies at lower volume levels for a much fuller sound

- Dual tape deck monitors with 'Tape-2' having a DIN as well as RCA I/O's. (Tape Monitors can be used with Tape decks such as Cassette Tape Recorders/ Players, Reel to Reel's, 8-Track Tape Cartridge Decks, Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
 - Phono input with un-filtered input
 - Phono input with subsonic filter built-in to reduce turn-table rumble

- Tuner input (can also be used for ( Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® etc. inputs)
- Built-in High filter for reducing 19 kHz FM pilot tones and tape hiss and AM noise

- AUX Input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Front mounted 1/4" stereo headphone jack
- 1/4" front mounted mic input with Mic Mixing control to combine microphone signal with other input signals. Can you say "Instant Karaoke"?. (be careful with your 'home audio' speakers using an 'open / live' mic or any other 'un-compressed' signals)
- Pre-Amp Out / Power-Amp in loop
- Back panel features full RCA patch bay for all inputs
- Also features "spring-clip"  speaker connectors for A&B
- Triple AC convenience outlets with 2 Switched and 1 un-switched AC outlets for a maximum load of 400 watts of external gear.

- True "WORLD AC POWER"™ allows unit to be operated on 50 or 60 Hz AC and will select voltages from 110v, 120v, 220v and 240 Volts AC input.
 
Sansui AU-317 Specifications:

 
 
Output: Continuous 50 Watts per channel, min. RMS, at 8 Ohms both channels driven, from 20Hz to 20kHz.

Design type: 2 Channels, Integrated Pre /
 Class A/B operation Power Amplifier
Damping Factor: >70@ 20-20kHz into 8Ω

THD: 0.03% at full rated power into 8
Ω w/ 20-20kHz
Power Bandwidth: 20Hz-20kHz
Frequency Response at 1 Watt: DC-200,000Hz

S/N: 110dB for Tuner, Tape and AUX inputs
Bass Control: ±11dB @ 50Hz
Treble Control: ±10dB @ 15kHz
Subsonic Filter: -3dB @ 13Hz & 6dB / Oct
High Filter: -3dB @ 6dB / oct @ 7kHz

Loudness Control: +9dB @ 50Hz & +7dB @ 10kHz (-30dB Vol Level)

Input Sensitivities: Non-Phono inputs = 150mV / 47kΩ
Input Sensitivity Power Amp: 1V / 47kΩ
Tape outputs: 150mV
Pre-Amp
outputs: 1V
M
icrophone Sensitivity Power Amp:
8mV / 47kΩ

PHONO SECTION SPECS:
Freq Response:
20Hz-20kHz w/ RIAA Equalization of ±0.2dB
S/N: >77dB
Input Sensitivity: 2.5mV @ 47
Phono Overload: 200mV but still maintaining 0.008% THD


Again, as stated above, unit has been completely gone through and certified. All functions have been tested and pass with flying colors! No scuffs, scratches, dings or dents. Face and knobs are in beautiful condition. Unit looks NEW and sounds great! Measures 17" wide x 13.25" deep x 4.5" tall and weighs 23 lbs unpacked. Includes our standard 90 day
limited warranty!
SANSUI AU-317
Cond. 8.5+

SOLD 2/28/19
SHIPPED TO MARK IN CALIFORNIA



(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

      

          NEW LISTING 11/2018
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED / FULLY SERVICED
VINTAGE SAE
INTEGRATED STEREO AMPLIFIER
SAE TWO A7
#...3533
DUAL PHONOS, DUAL TAPE MONITORS AND EXTERNAL PROCESSOR LOOP

Circa 1976-83
M.I.J.

SOLD 3/6/19
SHIPPED TO BENJAMIN IN NEW MEXICO


ü  Our technician has completely gone through and 'Certified' this unit.

ü  Everything was cleaned inside and out including all switches, controls and contacts.  Cleaned and re-lubed all control shafts.

ü  Internal fuses checked for correct value / function and replaced where necessary.

ü  ‘Multi-Voltage’ switch replaced and correctly set for North American current. 

ü  Solder joints reflowed on all possible high heat and stress points

ü 
Defective 'meter IC' replaced

ü  Amplifier section had output bias and DC offset adjusted to spec levels after 10 min warm-up.

ü  All functions tested for perfect operation.

ü  Following above procedures, unit was cosmetically detailed inside and out.

ü  All inputs tested and both sides produce clean and even sine waves into static 8 & 4 ohm loads! No power supply hum of any kind. It's dead silent!

ü  Following restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 48 hours.


On our test bench, each internal amplifier of this particular unit, #...3533, produced peak power of 26 Volts per channel at 8 ohms for 84 Watts per channel and 24 Volts at 4 ohms for 144 Watts per channel via discrete output transistors.
AC Idle current at 460mA. Floor noise 0.3mVAC.
 
____________________________

We don't get many SAE components in (other than my 'personal' units). This is a great amp for mid sized audio systems at 70+ Watts per channel. Great for up to 12" woofer systems. Loaded with 'usable' features as well. Looks and sounds great!


SAE TWO A7 Features Include:


- Discrete Output Transistors
- A-B-A+B-& off speaker selector
- 3-Band EQ w/ Separate Bass, Mid and Treble
- Tone Defeat selector for 'purest' signal path if desired
- Super quality de-tented Volume control pot
- Dual tape deck monitors (Tape Monitors can be used with Tape decks such as Cassette Tape Recorders/ Players, Reel to Reel's, 8-Track Tape Cartridge Decks, Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
- Bi-Directional Tape Dubbing Capability with Source Monitoring
- Dual Phono / Turntable inputs w/ built-in Phono Pre-Amp
- AUX Input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Tuner input (can also be used for ( Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® etc. inputs)
- Loudness control. "Loudness" functions to boost Bass in relationship to Mid frequencies at lower volume levels for a much fuller sound

- Built-in Subsonic Filter to eliminate excess rumble from sources such as turntables

- Instant -20db audio level muting
- Pre-Amp out / Power Amp input loop allows you to either inject an additional / external processor between the Pre and Power, or to connect Pre-amp to another power amp, or to connect another pre-amp to the power amp.
- Front mounted 1/4" stereo headphone jack
- One of my favorite aspects, "Easy to use" Speaker Connectors
- Quad AC convenience outlets on rear panel with 2 switched (550 Watts combined) and 2 un-switched (100 Watts) for a total capacity of 650 Watts of accessories.


Original
SAE TWO A7 Specifications:

POWER SPECIFICATIONS:

Power output: 70 WPC min RMS @ 8 Ohms & no more than 0.05% THD @ 20-20kHz
THD:
no more than 0.05% THD @ 20-20kHz at full rated power
Speaker Impedance: 4 Ohms minimum

PRE-AMP SECTION:
Signal / Noise Ratio:  95dB @ Tuner, Aux, Tape A/B inputs
Input Sensitivity AUX / Tape @ RCA's: 150mV @ 47kΩ @ 1kHz for rated output
Main Input @ AUX or TAPE: >4V
Output AUX / Tape @ RCA's: 150mV @ 47kΩ
Bass Control:  ±10dB @ 100Hz
Treble Control:  ±10dB @ 10kHz
Subsonic Filter: >3dB @ 30Hz, 6 dB/Oct
Loudness Control: +8dB @ 100Hz & 6dB @ 10kHz (-30dB Vol Level)

PHONO SECTION SPECS:
Freq Response:
RIAA Standard Curve & ±0.3dB
Signal / Noise Ratio:  74dB
Input Sensitivity: 2.5mV @ 47kΩ @ 1kHz for rated output
Max Input / Overload limit:  >150mV

Again, we have done the previously stated refurbishment / restoration work on this unit to insure its performance, and it gets our full 'Certification'. All functions tested for perfect operation. This unit is in essentially great cosmetic condition! Performs and sounds great! This is a very ‘musical’ sounding amp with lot’s of punch! Includes a pdf, 'e' copy, download of the SAE TWO A7 / A7e service manual if the purchaser desires. Measures 18.4" wide x 5.5" tall x 13.75" deep and weighs an impressive 24 lbs unpacked. Includes our standard 90 day limited warranty.
Cond. 8.5
SAE TWO A7 Integrated Amplifier

SOLD 3/6/19
SHIPPED TO BENJAMIN IN NEW MEXICO



(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

         

        NEW ADDITION 11/16/17
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED / FULLY SERVICED
VINTAGE ONKYO STEREO INTEGRATED AMPLIFIER
ONKYO A-7040
STEREO INTEGRATED AMP

#...0899
Circa 1979-81

MIJ
SOLD 12/15/18
SHIPPED TO TIM IN INDIANA

ü  Our technician has completely gone through and 'Certified' this unit.

ü  Following both internal and external visual inspection, the entire unit was cleaned out including all contacts, switches and controls. Switches now clean sounding and performing fine.

ü Silicone heat sink compound inspected for ‘suppleness’

ü Output section bias / DC offset adjusted to factory spec.

ü All functions tested for perfect operation.

ü All inputs and functions tested.

ü Both amplifier sides produce clean and even sine waves! No power supply hum of any kind. It's dead silent!

ü Following electronic refurbishing, the entire unit was cosmetically detailed

ü Following restoration procedures, the unit was ran continuously at medium volume, as all our amplifier / receivers are, into a 4 Ohm load with "Loudness" on and both Tone Controls at 10 for 48 hours.

While this amp was originally rated at 50 WPC on our test bench the internal amplifiers of this particular unit, #...0899, produced 25 Volts per channel at 8 Ohms for 78 Watts per channel and 21 Volts at 4 Ohms for 110 Watts
per channel via discrete, outputs (2x Toshiba 2SA1105 & 2x 2SC2580)
Idle current draw .75A
DC out measured following bench service at only 1.2mV!!! on either side
Very quiet with Floor noise measured at 0.0 mVAC.
   
____________________________
   
Great performing and 'classic' looking Onkyo A-7040 Integrated Amplifier. Great unit to provide the heart of a medium to mid-large sized Hi-Fi system. Unit looks, works and sounds great!
Onkyo A-7040 Features include:
  

- Discrete Output, Class A-B Amplifier design 
- Speaker A, B, A+B, Off selector
- Separate Bass and Treble controls featuring high-quality, de-tented controls
- I/O jacks and Speaker output posts feature 'Point to Point' wiring, so connections are 'stress free' on the circuit boards (all gear should be designed like this, but its 'too expensive' for most of the general public now

- Dual tape deck monitors (Tape Monitors can be used with Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
- Tape Dubbing Capability
- Dual Phono / Turntable inputs
- Tuner input (can also be used for ( Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® etc. inputs)
- Hi filter for reducing tape hiss / electronic hiss & noise- and record static
- Loudness control. "Loudness" functions to boost Bass and Treble in relationship to Mid frequencies at lower volume levels for a much fuller sound
- 1/4" stereo headphone jack
- External Speaker protection fuses
- Dual AC Convenience outlets (1 switched and 1 un-switched) with a total capacity of 200 Watts

   
Original Onkyo A-7040 Specifications:
   
Design type: 2 Channel, discrete output, Class A-B
POWER AMP SECTION:
Freq Response of power amp section:
 15Hz-50kHz
Damping factor: 45 @ 8Ω full bandwidth (means VERY TIGHT bass response)
Signal / Noise: 90dB
Cont rated Power: 2x 50 Watts @ 8 Ohms / 1kHz
THD:
0.026% @ 50Watts & 8 Ohms from 20-20kHz

PRE-AMP SECTION:
Signal / Noise:  90dB @ Tuner / Tape 'shorted'
Input Sensitivity Tuner / Tape @ RCA's: 150mV @ 50kΩ
THD: 0.026% at rated ouput
Bass Control:  ±10dB @ 100hz
Treble Control:  ±10dB @ 10khz
Hi-Filter: 6kHz & 6dB/Oct
Loudness Control: +5dB @ 100Hz & +5dB @ 10kHz(-40dB VOL)

PHONO SECTION SPECS:
Freq Response:
20-20kHz ±0.5dB
S/N: >80dB!!!, IHF-A
Input Sensitivity: 2mV @ 50kΩ
Overload limit: 170mV @ 1k w/ 0.026% THD

 

Again, as stated before, our technician has completely refurb'd this Onkyo A-7040 Stereo Integrated amplifier, cleaning and testing all and it gets our full 'Certification'. All functions test perfectly. Great integrated for just about any stereo system from med to medium large speakers. This is a fabulous amp. Sonically superb following our techs work. Very musical. Lots of solid power / punch. Unit looks good and sounds great! Can include a pdf 'e' copy of the Onkyo A-7040 Service Manual if the new owner so desires. Measures 16.5" wide x 15.7" deep x 5" tall and weighs 21 lbs unpacked. Includes our 90 day limited warranty.
Onkyo A-7040 Stereo Integrated amplifier
Condition 8.5

SOLD 12/15/18
SHIPPED TO TIM IN INDIANA

(Cons.) R.R.



We currently have the 'matching' AM/FM Tuner on our 'Stereo Tuners' page




(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

 

    

    
(above left photo of amp with 'matching' tuner.
Sold separately)

NEW LISTING 11/2018
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED / FULLY SERVICED
VINTAGE FISHER
INTEGRATED STEREO AMPLIFIER
FISHER "STUDIO STANDARD" CA-7000 SERIES
FROM FISHER 'SYSTEM 7000' RACK
#...5790
WITH 'MIC MIXING'

Circa 1978-79
M.I.J.
SOLD 12/19/18
SHIPPED TO KYLE IN TEXAS

ü Our technician has completely gone through and 'Certified' this unit.

ü Everything was cleaned inside and out including all switches, controls and contacts.  Cleaned and re-lubed all control shafts.

ü Internal and external fuses checked for correct value / function and replaced where necessary.

ü Solder joints reflowed on all possible high heat and stress points

ü Amplifier section had output bias and DC offset adjusted to spec levels after 10 min warm-up.

ü All functions tested for perfect operation.

ü Following above procedures, unit was cosmetically detailed inside and out.

ü  All inputs tested and both sides produce clean and even sine waves into static 8 & 4 ohm loads! No power supply hum of any kind. It's dead silent!

ü  Following restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 48 hours.

On our test bench, each internal amplifier of this particular unit, #...5790, produced peak power of 21 Volts per channel at 8 ohms for 55 Watts per channel and 17 Volts at 4 ohms for 72 Watts per channel.
AC Idle current at 230mA. Floor noise < -60dBm.
 
____________________________

Great looking, Rack Mount, Silver-face, Fisher Studio-Standard CA-7000 integrated amplifier. This is a great amp for mid sized audio systems at 70+ Watts per channel. Great for up to 12" woofer systems. Loaded with 'usable' features as well. Looks and sounds great!


Fisher Studio-Standard CA-7000 Features Include:


- Dual VU power level meters showing both dB's and Watts
- Externally located, Vertically oriented heat sinks (keeps output 'heat' outside of the amp housing, where it belongs)

- Separate Bass, Mid and Treble featuring high-quality, De-tented pots
- Super quality de-tented Volume control pot
- Separate Tape Monitor (Tape Monitors can be used with Tape decks such as Cassette Tape Recorders/ Players, Reel to Reel's, 8-Track Tape Cartridge Decks, Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
- Phono / Turntable input w/ built-in Phono Pre-Amp
- AUX Input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Tuner input (can also be used for ( Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® etc. inputs)
- Loudness control. "Loudness" functions to boost Bass in relationship to Mid frequencies at lower volume levels for a much fuller sound
- Microphone input with 'Mixing Level' control (be careful with your speakers using an 'open' microphone thru them)
- Range selector for Power Meters
- Externally located amplifier protection fuses

- Front mounted 1/4" stereo headphone jack
- Rack-Mountable Fisher Studio Standard amp for Fisher racks (17.5" wide. This is not 'standard' rack width, which is 19")
- Triple AC convenience outlets on rear panel with 2 switched (100 Watts combined) and 1 un-switched (100 Watts) for a total capacity of 200 Watts of accessories.


Fisher Studio-Standard CA-7000 Specifications:

POWER SPECIFICATIONS:
Power Bandwidth: 15Hz-40kHz
Power output: 42 WPC min RMS @ 8 Ohms & no more than 0.3% THD @ 15-40kHz
THD:
no more than 0.3% THD @ 20-20kHz at full rated power and 0.03% THD @ 10 Watts output
Damping: 40 @ 8 Ohms
Speaker Impedance: 8 Ohms minimum


PRE-AMP SECTION:
Frequency Response: 120Hz-20kHz
Signal / Noise Ratio:  85dB @ Tuner, Aux, Tape A/B inputs
Input Sensitivity AUX / Tape @ RCA's: 150mV @ 35k Ω @ 1kHz for rated output
Output AUX / Tape @ RCA's: 150mV @ 47k Ω
Bass Control:  ±10dB @ 50Hz
Treble Control:  ±10dB @ 20kHz
Loudness Control: +8dB @ 100Hz & 4dB @ 10kHz (-30dB Vol Level)
Microphone Input w/ 600 Ohm mic:
2.5mV/ 6k Ohms

PHONO SECTION SPECS:
Freq Response:
RIAA Standard Curve & ±0.3dB
Signal / Noise Ratio:  75dB
Input Sensitivity: 2.5mV @ 50k Ω @ 1kHz for rated output
RIAA Deviation: RIAA Standard Curve ±0.5dB

Again, we have done the previously stated refurbishment / restoration work on this unit to insure its performance, and it gets our full 'Certification'. All functions tested for perfect operation. This unit is in essentially great cosmetic condition! The only issue worth mentioning is there's some light 'pitting' on the rack handles that is mostly noticeable when you are caring or lifting the unit by the handles. Performs and sounds great! This is a very ‘musical’ sounding amp with lot’s of punch! Includes a pdf, 'e' copy, download of the Fisher Studio-Standard CA-7000  service manual if the purchaser desires. Measures 17.75" wide x 5.5" tall x 11.5" (including rack handles) deep and weighs an impressive 24 lbs unpacked. Includes our standard 90 day limited warranty.
Cond. 8.5
Fisher Studio-Standard CA-7000 Integrated Amplifier
(Cons.) R.R.

SOLD 12/19/18
SHIPPED TO KYLE IN TEXAS



(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

 

    

         NEW ADDITION 3/19/18
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
REFURBISHED / SERVICED
PRE-APPRECIATED KENWOOD POWER AMPLIFIER
KENWOOD KM-206 / KM206 POWER AMP
'Military Market' / PX UNIT

600+ WATT MONSTER!!!
#...0052
Circa 1985-86
MIJ

SOLD 7/26/18
SHIPPED TO MIKE IN WASHINGTON


ü  Our technician has completely gone through and 'Certified' this unit.

ü  Unit bench checked / tested.

ü  Amp has been cleaned inside and out.

ü  Face removed, meter illumination lens removed, cleaned and reattached.

ü  All new panel illumination lamps replaced with new.

ü  All functions have been tested and pass with flying colors!

Amp designed using Huge Power Supply Transformer and oversized, vertical finned heat sink for very efficient and silent, passive cooling of output devices. All inputs tested and both side produces clean and even sine waves! No power supply hum of any kind. It's dead silent! Following restoration procedures, we burned it in, in the shop at continuous volume for 48 hours straight and it functioned flawlessly.
   

While this amp is originally rated at 150 Watts with both channels driven (310W + 310W "Peak Music Power"), on our test bench, this particular unit's (#...0052) amplifiers produced 38 Volts at 8 Ohms per channel for 180 Watts / channel and 26 Volts at 4 Ohms per channel for 169 Watts / channel via discrete output transistors (2x Sanken 2SA1216 & 2x 2SC2922 / 2274. (Idle AC current draw @ .4A.
Floor noise measured at L= 00.0mVAC and R=00.0mVAC / -60dBm) 
   

Great, later model power amp by Kenwood. Model KM-206. HUGE power output! Excellent for 2-channel (stereo) audio listening or for use in an A/V system. Lots of punch and headroom.
Kenwood KM-206 Features:
   

- 2- Channel stereo operation
- A or B speaker selector via high current relay
- Dual, Vertical, 7-Segment LED Power Output Meters with Dual Position Level Selector
- Built-in Protection circuit
- LED Status indicators
- Front-mounted 1/4" stereo headphone jack
- RCA input jacks
- Dual, vertical finned internal heat sink
- Oversize power supply transformer
- 3 Rear-mounted AC convenience outlets (2 switched and 1 un-switched for a total capacity of 200 Watts)

   
Kenwood KM-206 Original Specs:
 "150 Watts per channel minimum RMS, both channels driven @ 8ohms, 20-20k, with no more than 0.03% THD"
Design type:
2 Channels, AB operation
Damping Factor: >35 @50Hz / 8 ohms
Signal / Noise: 120dB A weighted
Rated RMS Output: 155 Watts per channel, min. RMS, @ 8Ω, both channels driven, from 20Hz to 20kHz.
Music Power 310 Watts + 310 Watts
THD:
0.03% at 'Full Rated Output'  / 8Ω w/ 20-20kHz
0.015% @ half rated power / 8Ω w/ 20-20kHz
0.001% @ half rated power / 8Ω w/ 1kHz
IMD: 0.002% @ rated power / 8Ω
Power Bandwidth: 10Hz-50kHz @ 0.03% THD @ 8Ω
Potential Frequency Response: 5Hz-200kHz
 

Again, as stated before, our technician has completely refurb'd this Kenwood KM-206, stereo Power-Amp, cleaning and testing all and it gets our full 'Certification'. Great 'all around' power amp for about any audio system. We have sold MANY of this series of Kenwood power amps, with never a complaint. Includes an 'e-copy' pdf download of the Kenwood KM-206 owners / users / instruction manual Unit looks, works and sounds great! Unit measures 16.5" wide x 10.5" deep x 4.75" high and weighs 20 lbs unpacked. Includes our standard 90 day limited warranty.
KENWOOD KM-206
Cond. 8.5++

SOLD 7/26/18
SHIPPED TO MIKE IN WASHINGTON

(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

 

    

NEW LISTING 11/2018
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
VINTAGE TECHNICS INTEGRATED STEREO AMPLIFIER
TECHNICS SU-V6X
#...
5A161
BIG POWER &

TONS OF INPUTS FOR A 'VINTAGE' UNIT

Circa 1984-86
"WORLD AC POWER"
M.I.J.
SOLD 12/24/18
SHIPPED TO STEVE IN CONNECTICUT


ü Our technician has completely gone through and 'Certified' this unit.

ü Everything was cleaned inside and out including all switches, controls and contacts.  Cleaned and re-lubed all control shafts.

ü Internal fuses checked for correct value / function and replaced where necessary.

ü ‘Multi-Voltage’ switch replaced and correctly set for North American current. 

ü Solder joints reflowed on all possible high heat and stress points

ü Amplifier section had output bias and DC offset adjusted to spec levels after 10 min warm-up.

ü All functions tested for perfect operation.

ü Following above procedures, unit was cosmetically detailed inside and out.

ü All inputs tested and both sides produce clean and even sine waves into static 8 & 4 ohm loads! No power supply hum of any kind. It's dead silent!

ü Following restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a load with "Loudness" on and both Tone Controls at 10 for 48 hours.


On our test bench, each internal amplifier of this particular unit, #...A161, produced peak power of 34 Volts per channel at 8 ohms for 144 Watts per channel and 24 Volts at 4 ohms for 144 Watts per channel via discrete output transistors (2X 2SA1301 & 2X 2SC3280).
AC Idle current at 450mA. Floor noise > -60dB.
 
____________________________

I used to sell Technics integrated amps (and most of their other gear) when this unit was current. This one appears to be designed for the Euro/Asia/Military market as the version I sold here in North America didn't have as many inputs nor the 'impedance switch' if I recall correctly. This is a great amp for mid to larger sized audio systems at 144+ Watts per channel. Great for larger woofer systems as well. Loaded with 'usable' features as well. Works and sounds great!


TECHNICS SU-V6X Features Include:

- Speaker Load Impedance selector on rear panel. This is probably the most important feature of this amp (I wish all amps had this). Allows 100% of the power to be utilized on speakers of only 8-16 Ohms, instead of 50-75% of power, which would be typical of most amps / receivers.
- Technics 'New Class A' amp architecture (reduces 'switching distortion due to output transistors staying on throughout sine-wave)

- Discrete Output Transistors

- Dual 71V / 15,000 uf power supply filter caps
- A (Main) -B (Remote) -A+B-& off speaker selector
- Separate Bass and Treble
- Tone Defeat (Straight DC) selector for 'purest' signal path if desired
- Dual tape deck monitors (Tape Monitors can be used with Tape decks such as Cassette Tape Recorders/ Players, Reel to Reel's, 8-Track Tape Cartridge Decks, Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
- Phono / Turntable input w/ built-in Phono Pre-Amp
- AUX Input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- Tuner input (can also be used for ( Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRIUS® etc. inputs)
- CD Input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- TV / Video 1 Input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)
- TV / Video 2 Input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRIUS® etc.)

- Graphic EQ loop allows you to either inject an additional / external processor without 'chewing up' one of the inputs
- Record Out selector with bi-directional tape dubbing controls. (Separate "Record Out" allows recording from one source while you listen to another) (‘Record Out’ also allows the use of external signal processors, such as EQ’s, to be used with ‘Tape-2’)

- Loudness control. "Loudness" functions to boost Bass in relationship to Mid frequencies at lower volume levels for a much fuller sound

- Built-in Subsonic Filter to eliminate excess rumble from sources such as turntables

- Instant -20dB audio level muting
- Front mounted 1/4" stereo headphone jack
- Triple AC convenience outlets on rear panel with 1 switched 100 Watts and 2 un-switched (100 Watts ea) for a total capacity of 300 Watts of accessories.

-
True "
WORLD AC POWER"™ allows unit to be operated on 50 or 60 Hz AC and will select voltages from 110v, 120v, 220v and 240 Volts AC input.


Original
TECHNICS SU-V6X Specifications:

POWER SPECIFICATIONS:

Rated Power output: 100 WPC min RMS @ 8 Ohms & no more than 0.003% THD and 0.007% @ 4 Ohms and across 20-20kHz
THD:
no more than 0.001% THD @ 20-20kHz at full rated power
SMPTE IMD: no more than 0.007% THD @ 8 Ohms / 20-20kHz at full rated power
Damping Factor: 80 @ 8 Ohms and 40 @ 4 Ohms (TWICE what many amps are rated at!!!
Speaker Impedance: 4 Ohms minimum

PRE-AMP SECTION:
Signal / Noise Ratio:  104dB @  "Line Level' inputs
(IHF '66 standard)
Input Sensitivity @ any 'Line Level' @ RCA's: 150mV @ 18kΩ for rated output
Output Tape Record @ RCA's: 150mV or EQ loop @ 18
Freq Response: 0.7Hz-140kHz -3dB or 20Hz-20kHz -0.2dB
Bass Control:  ±10dB @ 50Hz
Treble Control:  ±10dB @ 20kHz
Subsonic Filter: >3dB @ 30Hz, 6 dB/Oct
Loudness Control: +9dB @ 50Hz & ~6dB @ ~10kHz (-30dB Vol Level)

PHONO SECTION SPECS:
Freq Response:
RIAA Standard Curve & ±0.5dB
Signal / Noise Ratio:  88dB w/ 2.5mV input (IHF '66 standard)
Signal / Noise Ratio:  72dB w/ 250
μV input (IHF '66 standard)
Input Sensitivity MM: 2.5mV @ 47kΩ for rated output
(IHF '66 standard)
Input Sensitivity MC: 0.17mV @ 220 for rated output
(IHF '66 standard)
Max Input / Overload limit MM:  >170-210mV (Frequency dependant)
Max Input / Overload limit MC:  >12-15mV (Frequency dependant)

Again, we have done the previously stated refurbishment / restoration work on this unit to insure its performance, and it gets our full 'Certification'. All functions tested for perfect operation. This unit is in essentially good cosmetic condition. The 'worth mentioning' cosmetic issues would be that the silk screened labels on the 'Input' buttons have partially worn off, so it's a bit difficult to tell at first what buttons do which inputs. Obviously once you got acquainted with their function you would be able to 'work around' that.
Performs and sounds great! This is a very ‘musical’ sounding amp with lot’s of punch!
Includes a pdf, 'e' copy, download of the TECHNICS SU-V6X service manual if the purchaser desires. Measures 16.9" wide x 5.5" tall x 14.9" deep and weighs an impressive 25 lbs unpacked. Includes our standard 90 day limited warranty.
Cond. 8.5
TECHNICS SU-V6X Integrated Amplifier
SOLD 12/24/18
SHIPPED TO STEVE IN CONNECTICUT

(Cons.) R.R.


(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

    



        NEW LISTING 3/21/18

 (Click on above thumbnails to enlarge photos)

CheckMarkSmall_web.jpg (792 bytes)  warranty
VINTAGE PIONEER STEREO INTEGRATED AMPLIFIER
PIONEER SA-7800 / SA7800
'BATTLE WORN' COSMETICALLY, BUT
TECHNICALLY, A

NON-SWITCHING, 'CLASS-A LIKE' POWER HOUSE

 #...3645S
Circa 1978-'80
MIJ

SOLD 6/12/18
SHIPPED TO MIKE IN MARYLAND


 
ü  Our technician has completely gone through and 'Certified' this unit.

ü Following ext / int visual inspection entire unit was cleaned inside and out including all contacts, switches and controls.

ü Bias adjusted to correct spec.

ü Meters calibrated per service manual.

ü Switches and controls now clean sounding and performing solidly.

 
ü All functions tested for perfect operation.

ü All inputs tested and both side produces clean and even sine waves!

ü No power supply hum of any kind. It's dead silent!

ü Following electronic refurb, entire unit was cosmetically detailed (as it 'practically' allowed).

Classic brushed aluminum face plate with the original aluminum knobs (volume knob may be a replacement).
This unit does have a few 'battle scars'. Besides the fairly typical 'finish peel', there's some 'clouding' thru the finish on the meter bezel, and some 'light spots' across the face plate that nothing seemed to effect (It's not a 'beauty contest winner' but not 'offensive', see photo collage above). Following 12+ hours of restoration procedures, the unit was ran continuously at medium volume, as all our amplifier / receivers are, into a 4 Ohm load with "Loudness" on and both Tone Controls at 10 for 48 hours.
     
On our test bench the internal amplifiers of this particular unit, #...3645S, produced 26 Volts per channel at 8 ohms for 84 Watts per channel and 23 Volts at 4 ohms for 132 Watts per channel via discrete outputs (2x 2SA1075 & 2x 2SC2525)
Idle current draw .3A.
 DC out measured at <25mV on either side.
Very quiet with Floor noise measured at <00.1mVAC.
    
____________________________
 
Very classy silver face / Blue Florescent power meter integrated amp. Will match great with Pioneer Cassette Decks and Reel to Reel decks utilizing their famous "Blue" meters. 
Barring it's cosmetic blems it's a Great amp for home or project recording studio use.

Pioneer SA-7800 Integrated Amplifier TECHNICAL Features include:

- 'Non-Switching' amp utilizes 'super linear output transistors' with 'high range switching to reduce switching noise distortion associated with many 'Class A-B' amp designs.
This essentially gives you Class-A sonics, but without all the heat of a true Class-A amp design. It however eliminates the 'switching noise' present in many "A-B" designs (spelled out in detail in the original Pioneer SA-7800 sales brochure, compliments of www.hifi-manuals.com )
- 'DC 'Flat' Amp' eliminates capacitors in the signal chain, thus reducing 'lag' in the signal prior to hitting the power amp
- Gold plated Relay contacts in speaker protection circuit designed to last a lifetime (and I can tell you that 'relay contacts' are an 'issue point' on many amps / receivers we service. If they were all 'gold plated' it would certainly save some 'headaches').
- Super thin cut heat-sink fins for more efficient cooling.
- Pure copper leads on many of the board mounted components (these are not easy to source from a manufacturing standpoint typically)

- Tone Controls with a 'true bypass' when in their '12:00 Noon' position (although there's also a 'Tone Defeat' switch).
- Separately fastened RCA I/O jacks with 'point to point' internal connections


Pioneer SA-7800 Integrated Amplifier Features and 'Creature Comforts' include:


- Produces full power into only '8 Ohms' (most amps can only produce their full power potential into 4 Ohms)
- DC surge and Short Circuit protection built-in 
- Classic Pioneer, Dual Blue Florescent power meters
- Speaker selector for A or B, A+B or Off 
- Subsonic filter with 15Hz cut-off built-in for cutting turntable rumble
- Super quality de-tented volume control
- Tone Defeat for purest tone path if so desired
- Separate Bass and Treble with high quality de-tented controls
- Loudness function (boosts EQ on Bass and Treble, while cutting mids for a fuller sound at lower volume levels)
- 'Stereo / Mono' / Reverse Stereo selector
- Dual tape deck monitors (Tape Monitors can be used with Video / CD / DVD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iTouch® / iGadget / MP3 / XM® / SIRUS® CDR (CD recorders as well as for inserting signal processors, such as EQ's, Reverbs, Spatial Enhancers / Dynamic Processors, Noise Reduction units, Special Effects units, Time Delays, etc)
- Bi-Directional Tape Duplication
- Phono / Turntable input w/ 'Built-in' phono pre-amp
- 'Phono Interference Filter' reduces RFI from external sources
- Tuner input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPad® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRUS® etc.)
- AUX input (may also be used for Video / CD / DVD / LD / VCR / DAT / MP3 / iPod® / iPhone® / iPod® / iTouch® / iGadget / eReader / MP3 / XM® / SIRUS®, audio mixers, computer sound-cards etc.)
- Front mounted 1/4" stereo headphone jack
- -20dB Audio Muting
- Back panel features full RCA patch bay for all inputs (each 'fastened separately' to the rear panel, and 'point to point' wired internally, instead of being soldered directly to the circuit board, which is always a 'failure point').
- "spring-clip"  speaker connectors for A&B speakers
-
2 Switched and 2 un-switched AC outlets for a maximum load of 400 Watts of external gear.

 
Pioneer SA-7800 Original Specifications:
 
 "
Continuous Power output of 65 Watts per channel, min. @ 8 Ohms from 20Hz to 20kHz @ <0.009%THD or 65 Watts per channel, min. @ 4 Ohms from 20Hz to 20kHz @ <0.009%THD." (15W more than the SA-708 @ 4 Ohms)
 
Design type: 2 Channels, Integrated Pre /
Class AB operation Power Amplifier
Power Output: Continuous power output, 10Hz-50,000Hz:
65W/Ch THD 0.02% @ 8 Ohms
85W/Ch THD 0.03% @ 8 Ohms

Damping Factor: >55 @ 20-20kHz into 8Ω (15 more than the SA-708)
  S/N: 110dB for 'non-phono' inputs (10dB more!!! than the SA-708)
IMD: 0.003% at half rated power into 8Ω w/ 20-20kHz
  Freq Response: 10Hz-50kHz at full rated power
Input Sensitivities 'non-phono' inputs for full rated output: 150mV / 50KΩ via RCA's
Output at Tape Monitors: 150mV via RCA's
Bass Control:  ±10dB @ 100Hz (SA-708 is only 7.5dB cut / boost)
Treble Control:  ±10dB @ 10kHz  (SA-708 is only 7.5dB cut / boost)
  Subsonic Filter:  -6dB / oct @ 15Hz
 Loudness:  +6dB @ 100Hz & +3dB @ 10kHz w/ vol set at -40dB
Input Freq Response range (non phono inputs): 5-100,000Hz

 
Phono Section:

Freq Response: 20Hz-20kHz RIAA EQ
S/N: 87dB
Phono THD: 0.003% @ 1kHz
Phono MM Sensitivity: 2.5mV / 50kHz
 Phono MM Maximum Input Level: 200mV RMS while still maintaining 0.003% THD @ 1kHz

 
Again, as stated before, our technician has completely refurb'd this Pioneer SA-7800 Integrated Stereo Amplifier, cleaning and testing all and it gets our full 'Certification'. Entire unit, including the original brushed aluminum, Face and knobs are in beautiful condition. Unit looks beautiful and sounds great with what the restoration tech called "Gutsy" power & punch! Just FYI, this Pioneer SA-7800 has considerably better specs than it's little brother, the SA-608 / SA-6800 and certainly it's 'alter ego' SA-708,
(check S/N, tone controls and damping factor particularly).
Comes with an 'e' copy / pdf download of the original Pioneer SA-7800 owners / users manual and brochure if purchaser so desires. Measures 16.5" wide x 14.75" deep x 6" tall and weighs 27.5 lbs unpacked. Includes our 90 day limited warranty!
Pioneer SA-7800 INTEGRATED AMP
Cond. 7.5-8 (due to cosmetic blems)

SOLD 6/12/18
SHIPPED TO MIKE IN MARYLAND

(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 

             

      

NEW LISTING 12/12/19
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes)  warranty
RESTORED / REFURBISHED / FULLY SERVICED
VINTAGE AKAI REEL TO REEL TAPE DECK
AKAI X-1800SD (TYPE-C)

COMBO REEL / 8-TRACK CARTRIDGE
4-TRACK / 2-CHANNEL STEREO or 4-TRACK / 1-CHANNEL MONO 
AKAI's "CROSS-FIELD
" BIAS HEAD
3-SPEEDS
1/4" REEL TO REEL
BUILT-IN AMP AND SPEAKERS

#...3198

  
"
WORLD AC POWER" ™
Circa 1970-72
for sale

 

  

 

    

Panasonic_RS-803US_8-Track_Tape_Deck_collage.jpg (199165 bytes)    

NEW ADDITION 11/9/17
 (Click on above thumbnails to enlarge photos)

CheckMarkSmall_web.jpg (792 bytes) warranty

RESTORED / REFURBISHED / FULLY SERVICED
VINTAGE
PANASONIC 8-TRACK CARTRIDGE TAPE DECK
8-TRACK PLAY / RECORD DECK
PANASONIC RS-803US
WITH *FAST FORWARD! and
"AUTO STOP"

#...3669
MIJ

SOLD 4/1/18
SHIPPING TO CARLOS IN NEW MEXICO


ü Our technician has completely gone through and 'Certified' this unit.

ü
 We have completely and extensively gone through the mechanicals and electronics of this unit.

ü  Entire transport was disassembled down to the chassis, and every mechanical part was cleaned of "varnished" lubes and re-lubed as well as the always at issue, Pinch Roller plunge assembly, re-lubed and reassembled.

ü Main drive belt has been replaced with NEW for trouble free service.

ü Replaced bad track indicator lamps, and checked the balance for function

ü Capstan flywheel removed, cleaned, burnished and re-lubed prior to re-install. Entire transport and mechanism has been cleaned, re-lubed and de-magnetized.

ü Program change mechanism and indicator contacts cleaned / burnished and re-lubed for trouble-free program changes. All original program indicator lamps now work fine.

ü Heads have been cleaned and de-magnetized and are in great shape.

ü Head azimuth adjusted with alignment / test tape and O-Scope for best High Frequency and channel to channel Signal Phase.

ü Track alignment adjusted to eliminate 'cross-talk' between tracks and to ensure the best high-frequency response (not normally expected from 8-track cartridge performance). Deck now has clear sounding highs even when using pre-recorded tapes.

  
ü Record signal path contacts cleaned and burnished for static-free performance.

ü Linear Record switch cleaned so no 'Motor Boating' effect

 
ü Internal playback, meter and record level pots also adjusted w/ O-scope.

ü Speed initially measured at 97.75% accuracy. Following refurbishment, Speed checked with factory test tape to 99.8% accuracy! (meaning in this case, that our 1000Hz test tape plays back at 1002Hz on our Freq Counter Meter)

ü Deck 'sonically' checked for WOW and Flutter with no appreciable issues

ü Record Meters adjusted for 'even' readout and performance

ü Floor noise tested to -60dB

Since we also burnished the program track light contacts, they all light and are responsive. Unit works and sounds GREAT!

 _____________________________


Records VERY well w/ 1kHz test tone on NEW Normal Bias and / or Chrome Tape. This machine would be perfect for burning your 8-track collection  to CD. Tape speed tested to 98.8% accuracy! Meters even w/ factory test tone tape. Cosmetically there's a few minor dings / scuffs around the face edge (mostly on bottom edge) and some brown 'paint' dripped on the left side panel (we didn't try and remove as it's not offensive and didn't risk damage to finish. See above photos). Deck looks good with only minor scuffs, striations and works GREAT!


_____________________________

  

   
Great quality 8-track cartridge play / record deck. This is a great deck for transferring a large amount of tapes to another media as it has two very important features. Momentary Fast Forward and Auto Stop. These features are used to find the beginning of track one without going past the beginning of the next track. Trying to do a lot of transfers, as a business without those two features will cost a lot of time / money!
 

   Panasonic RS-803US Features include:

   
  - Stereo Playback and Recording 
  - Back-lit, analog VU level meters
   - Separate L & R Input level controls
   - *Momentary (non-locking) Fast Forward
   - Auto-Stop
    - 1/8" microphone input mounted on the front panel
   - 1/4" Stereo Headphone jack
   - Rear mounted RCA I/O's

   
   Again, have completely gone through it making ready for playback for listening to or burning your collection. Great for burning your tape collection to another media or for recording new 8-tracks from CD or iPod for your classic Muscle Car. Looks good and works GREAT! Includes our standard 90 day limited warranty. Measures 16.75" wide x 9.5" deep x 4.5" high and weighs 11 lbs unpacked.
PANASONIC RS-803US
Cond. 8.5

SOLD 4/1/18
SHIPPING TO CARLOS IN NEW MEXICO

(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)


 
 

 

     Realistic_TR-802_8-Track_Cartridge_Tape_Deck_collage.jpg (176781 bytes)

  


            NEW LISTING 10/23/18
(Click on above thumbnails to enlarge photos)

CheckMarkSmall_web.jpg (792 bytes) warranty
RESTORED / REFURBISHED / FULLY SERVICED
VINTAGE
REALISTIC 8-TRACK
REALISTIC MODEL TR-802
/ CAT # 14-928
8-TRACK DECK
WITH DOLBY

#...2588
 Circa 1978-82
SOLD 3/21/19
SHIPPING TO BILL IN ILLINOIS

ü Our technician has completely gone through and 'Certified' this unit cleaning inside and out, cleaning out ‘gelled’ lubes (a ‘MUST DO’ on all pre-owned / vintage tape decks) and re-lubricating mechanism, investing over 5.5 hours of tech time



ü Nylon head clamp has been repaired (most decks utilize a 'nylon' head mount, and we haven't seen one in a LONG time that hasn't been cracked, allowing the head to 'droop'. This MUST be addressed, or the head would never align to the tape).



ü Heads have been cleaned and entire transport has been de-magnetized.

ü Main drive belt has been reconditioned for trouble free service.

ü Internal, linear record switch flooded with cleaner to eliminate 'motor boating' and other common issues.

ü Track indicator contacts burnished.

ü All track indicators function.

ü Head elevator cleaned and re-lubed.

ü Capstan bushing cleaned and re-lubed.

ü Defective 'Left VU Meter' replaced w/ another OEM unit

ü Head azimuth & track cross-talk adjusted for optimum performance and the best high-frequency response (not normally expected from 8-track cartridge performance) utilizing RCA #356 and 8TSC-101, Aspen 'Deck Tester' and Audio-Tex 30-312 Test / Alignment tapes, a dual trace Oscilloscope and frequency counter.

ü Internal PB, REC and METER PC Pots cleaned and adjusted for 0dB with Oscilloscope.

ü Floor noise measured to 0.3mVAC.

ü Speed checked at 98.4% accuracy! (1k = 1016Hz)

ü Checked for 'WOW' and 'Flutter' by recording test tones and dynamic piano cuts. Piano even sounds fairly decent and that's a difficult thing to do with an 8-track 'cartridge' tape deck.

ü Deck has clear sounding highs even when using pre-recorded tapes. This machine would be perfect for burning your 8-track collection  to CD or making tape for your 'Antique Muscle Car'.

One issue with every TR-802 / 803 we've had (and we've had quite a few) is they always have non-functioning, non-repairable tape counters. They have an inherent issue with a small nylon gear around a steel shaft that after 30 years, cracks, thus locking it up every revolution. The same thing happens to many Pioneer and Craig 8-tracks, as well as a few others (since the tape counters were primarily made by one company for most electronics mfg's to use). There are two types of Realistic TR-802/803 8-track tape counters;  those that have already have cracked gears and those that are just about ready to have cracked gears. The "work-around" for this is to remove the linkage belt, and cover the tape counter opening.


ü Looks good and other than the above mentioned tape counter, ALL works GREAT!
 _____________________________
 
Great quality 8-track cartridge play / record deck. We recorded from a CD onto a new 8-track cartridge and it sounded as good as a cassette and many Reel to Reels! Quality tape transport.
Great for making "new" 8-track tapes for listening in your vintage or muscle car. All functions work great.

REALISTIC MODEL TR-802 FEATURES:
 
- User adjustable Crosstalk / 'track alignment' on bottom panel for tape cartridges that don't line up correctly (instead of inserting a book of matches under the tape like we used to always do)
- User adjustable Azimuth on bottom panel for tweaking the 'top end / treble' on different tape cartridges that don't line up correctly

- Locking Fast Forward (2.5x speed)
- Auto-Stop after each tape or at end of each track or Continuous play. Invaluable, Time / Money Saving feature when archiving large 8-track libraries. This feature coupled with a "Locking" Fast Forward are must haves for that use. Auto-Stop works on 'record' as well.
- Repeat & Pause Lock
- Dolby Noise Reduction for Recording and Playback (if desired)
- Front-mounted, separate Left and Right level controls the input recording signal
- Power-assist Eject feature
- Output playback level control on the rear panel to match audio level precisely to your playback equipment inputs
- Dual "Glide-Path"
® Tape Record Level Controls
- Dual, analog VU level meters
- Dual ¼" microphone inputs mounted on the front panel

 
REALISTIC MODEL TR-802 SPECS:

Track system: 8-track, 2-channel stereo tape deck
Motor: 1 Synchronous
Transport Control Type: Mechanical: Fast Forward, Play
S/N W/ Dolby: 55dB
Input Sens on Mic: 0.3-30mV
Input Sens on AUX: 100-300mV
Output Level: 0.775V
Tape speed: 9.5 cm/s (3-3/4 ips)
Wow & Flutter: >0.2% @ 3-3/4ips
Frequency response: 50Hz to 12,000Hz (± 3dB @ 3-3/4ips)

 
Again, unit looks and works great and is ready to use!
(Tape cartridge shown in photos not included with deck). Cosmetically about the only thing worth mentioning is a light, 'wiggly' scratch on part of the face plate (see photos above). Includes our standard 90 day limited warranty. Measures 16.5" wide x 10.5" deep x 5.25" high and weighs 9 lbs unpacked. 
 REALISTIC TR-802 / 14-928
Cond. 8

SOLD 3/21/19
SHIPPING TO BILL IN ILLINOIS

(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

 

 
   

 

 

 

 

 

 

 

 

 




BEST DEAL!
10 TAPES!

NEW LISTING 2/4/17

 10-Pack
 ONCE OR TWICE RECORDED
 REEL TO REEL TAPE
 REALISTIC / RADIO SHACK 'CONCERTape'
 1800 ft / 548.6m
 1.0 MIL
 'POLYESTER' TAPE
 IN THE 'WHITE' BOX
 7" x 1/4" Tape
 Cat # 44-1018A
 'Low Noise' / Normal Bias

for sale
Pre-Recorded, 1/4" X 7" (18cm), Realistic / Radio Shack, 'CONCERTape', 1800 ft reel to reel tape.
Great tape for general purpose recording.

These are 1800' / 548.6 meters and 1.0 MIL thick, and include individual, boxes with a plastic reel. More than enough length for most LP's at 7.5ips (fast, consumer speed) for 90 minutes combined sides (180 minutes at 3.75ips). According to an original catalog, "1-Mil base of heavy-duty Polyester resists breaking and stretching while giving you extra-wide response.""   Will work on any 'head format', meaning 'quarter track', 'half-track', 'full-track', '4-track / '8-track' / 'multi-track', stereo or mono tape recorders / decks. Reels are 'light gray' plastic. Leaderless tape.
We have actually found that 'Normal' bias tape works best on the older decks such as the pre 1980 Akai's, Concertone's, Craigs, Crowns, Grundigs, Kenwoods, Pioneers, Realistics, Sansui's, Sony TC's, TandBergs, Teacs, Telefunkens, etc. We have gotten some fine recordings using this tape, and due to the extreme 'retention' of high bias tape some times it is difficult to erase. These always seem to erase fine.
 
Most are at least 1800 feet and some with leaders intact and may or may not include individual box (often do). Most have been used and will have recordings on them.
Boxes and / or reels may have extraneous labels and / or marking on them. Reels may have blemishes / nicotine staining / dust etc. You will need to come up with your own labels as even if they are in the box, they likely aren't "sticky" anymore. Due to unpredictability of stocks we cannot "cherry pick" brands so they are always assorted. Plastic reels may be clear or black. Will work on any 'head format', meaning 'quarter track', 'half-track', 'full-track', '4-track / '8-track' / 'multi-track', stereo or mono tape recorders / decks. Use a bulk eraser or will simply erase when new recordings are made on your deck (assuming your 'erase' is functioning).
Used and likely recorded 10-pack-
$99.99 shipped*
NOW Includes A FREE Empty 'Take-Up' Reel

OR

We can also do a "Bulk erase" on your tapes for an additional $2.00 ea.
Used and Erased 10-Pack  $119.99 shipped*
NOW Includes A FREE Empty 'Take-Up' Reel

VERY LIMITED SUPPLY CURRENTLY IN STOCK


*Shipping within the United States is included in price.
For other shipping destinations, please call or email for shipping cost.


800-806-4231 ext 2 for sales, 10:00AM to 5:30PM MTN (Colorado, USA) time.

 
 

 

OUR MOST POPULAR PACKAGE
(photo of random reel to reel tape, and not necessarily representative of any brands / models included in 13 pack)

"BAKERS DOZEN"
13 + TAKE-UP

Reel-To-Reel Tape
Normal Bias
7" x 1/4" Tape
IN BOXES / STORAGE CASES
for sale
Pre-Recorded 1/4" X 7", Normal Bias / Regular Bias Reel-to-Reel tape. "Grab-bag" assortment of brands may, but not necessarily include Ampex, BASF, Irish, Kodak, Realistic, Scotch / 3M, Sony, Soundcraft, and others.
We have actually found that 'Normal' bias tape works best on the older decks such as the pre 1980 Akai's, Concertone's, Craigs, Crowns, Grundigs, Kenwoods, Pioneers, Realistics, Sansui's, Sony TC's, TandBergs, Teacs, Telefunkens, etc. We have gotten some fine recordings using this tape (also, due to the extreme 'retention' of high bias tape some times it is difficult to erase). Normal Bias tapes always seem to erase well.
 
Most will be at least 1800 feet and some with leaders intact and will come in either a box or storage case. Most have been used and possibly have recordings on them.
Boxes and / or reels may have extraneous labels and / or marking on them. Reels may have blemishes / nicotine staining / dust etc. You will need to come up with your own labels as even if they are in the box, they likely aren't "sticky" anymore. Leaders may or may not be intact, and even if they are, their splices may give way and need to be re-spliced.
Due to unpredictability of stocks we cannot "cherry pick" brands so they are always assorted. Plastic reels may be clear or black.
Will work on any 'head format', meaning 'quarter track', 'half-track', 'full-track', '4-track / '8-track' / 'multi-track', stereo or mono tape recorders / decks. Use a bulk eraser or will simply erase when new recordings are made on your deck (assuming your 'erase' is functioning). We also will ensure that the reels you receive are 'crack / split free'.

Used and likely recorded 13-pack $119.99 shipped*
NOW Includes A FREE Empty 'Take-Up' Reel

OR

We can also do a "Bulk erase" on your tapes for an additional $2.00 ea.
Used and Erased 13-Pack  $145.99 shipped*
NOW Includes A FREE Empty 'Take-Up' Reel

*Shipping within the United States is included in price.
For other shipping destinations, please call or email for shipping cost.

Tape Option:

800-806-4231 ext 2 for sales, 10:00AM to 5:30PM MTN (Colorado, USA) time.

 

 


 

 

 

7-Inch_Reel_Reel_Tapes_Tape_10-Pack_Used_High-Bias_web.jpg (25951 bytes)

ENOUGH FOR A FEW '10-PACKS' JUST BACK IN STOCK
(photo of random 'high bias' tape, and not necessarily representative of any brands / models included in 10 pack)
High Bias (Chrome)
7" Reel-to-Reel 1/4" Tape
10-Pack

Used 7", HIGH Bias / CHROME Reel-to-Reel tape. "Grab-bag" assortment of brands may include Ampex, BASF, Irish, Maxell, Realistic, Scotch / 3M, Sony, Soundcraft, TDK and others.
Most are at least 1800 feet and some with leaders intact and may or may not include individual box (often do). Most have been used and will have recordings on them. Boxes and / or reels may have extraneous labels and / or marking on them. Reels may have blemishes / nicotine staining / dust etc. You will need to come up with your own labels as even if they are in the box, they likely aren't "sticky" anymore. Due to unpredictability of stocks we cannot "cherry pick" brands so they are always assorted. Plastic reels may be clear or black. Will work on any 'head format', meaning 'quarter track', 'half-track', 'full-track', '4-track / '8-track' / 'multi-track', stereo or mono tape recorders / decks. Use a bulk eraser or will simply erase when new recordings are made on your deck (assuming your 'erase' is functioning). Plastic reels may be clear or black.
Used and likely recorded 10-pack $99.50 shipped*
NOW Includes A FREE Empty 'Take-Up' Reel

OR
We can also do a "Bulk erase" on your tapes for an additional $2.00 ea.
Used and Erased 10-Pack  $119.50 shipped*
NOW Includes A FREE Empty 'Take-Up' Reel

VERY LIMITED SUPPLY CURRENTLY IN STOCK


*Shipping within the United States is included in price.
For other shipping destinations, please call or email for shipping cost.
Tape Option:
800-806-4231 ext 2 for sales, 10:00AM to 5:30PM MTN (Colorado, USA) time.

 

 

 

 

  

HEY, WHY ALL THE 'X'd' OUT / OMITTED SPECS AND TEXT?


 


Yes, we know, EVERYTHING (at least all the receivers) are  OUT
currently.
We will be posting more in the future.
We are currently focusing resources on expanding our receiver 'Parts Department' AND 'refurbished' stereo receivers sell faster than we can get them refurbished, and it's a slow process getting them ready.
 
     
     

 

 

LINKS TO OUR 'HI-FI' DEPARTMENTS

Amps and
Pre-Amps

Receivers

Cassette
Decks

Tuners

Turntables

8-Track Decks

CD Players

Reel-Reel
Decks

EQs and Signal
Processors

Speakers

Betamax and
VHS VCRs

Turntable Cartridges

Tube Audio

Ne'cessories

Speaker Parts

Record Players

Vintage Radios

Vintage
Walkmans

Headphones

Stereo Parts


Wondering where the "tone" you remember went?....

Vintage Stereo Equipment receivers speakers Classic Silver Audio Collection and jerry gahagan

 

.... Surround yourself with Silver and find it again!



POLICIES, SPECIFICATIONS, AVAILABILITY, INFORMATION
AND PRICING SUBJECT TO CHANGE  AT ANYTIME  AND
WITHOUT PRIOR
NOTICE
and changes may not be posted to web immediately
.
 

20-30% restock fee / service charge applies to all returns for refund depending on item specifics & / or individual distributor / drop shipper policies.
See our "
Warranties / Returns" page via the link below for more details.

$20. Minimum Orders

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