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

PHOTO GALLERY OF
VINTAGE PIONEER
STEREO POWER AMPS, PRE-AMPLIFIERS AND INTEGRATED AMPS
- SOLD UNITS -
 

Photo gallery of vintage / Used Pioneer Stereo Amplifiers, Pre-amps, & Integrated that we have had in the past that have been sold. Keep checking as more vintage Pioneer Amps will be added periodically. Used vintage Pioneer Stereo Preamps, power amplifiers, integrated amps, Vintage 1970's Pioneer SPEC 1, A-70, QL-600A, SA-600, SA-608, SA-410, SA-510, SA-710, Pioneer SA-900, SA-5200, SA-6800, SA-9500, SA-9800. All photos and text, copyrighted and protected as stated at bottom of page. Click the link below for current inventory.

  TO SEE OUR SELECTION OF CURRENTLY
AVAILABLE STEREO AMPS, PRE-AMPS AND POWER AMPS
CLICK HERE



    

NEW ADDITION 5/19/09
 (Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes)  warranty
  PIONEER
 
 STEREO
  
INTEGRATED AMPLIFIER
  
   
PIONEER A-60 A60
 
 #...3881S
  
Circa 19
82-85
  
"WORLD AC POWER"

 
 MIJ 

SOLD 7/23/09

 
 

 
  Pioneer_A-70_web.jpg (27583 bytes)  Pioneer_A-70_collage.jpg (139198 bytes)
CheckMarkSmall_web.jpg (792 bytes)warranty
PIONEER A-70
NON-SWITCHING
INTEGRATED AMPLIFIER
Circa '82-'85
SOLD
    -
Pioneer_QL-600A_Quad-Amp_web.jpg (69008 bytes)

Pioneer_QL-600A_Quad-Amp_collage.jpg (329536 bytes)

PIONEER QL-600A
SOLD
QUAD 4-CHANNEL / STEREO
INTEGRATED AMPLIFIER AMP

 

   
    -

 


PIONEER SA-410
SOLD

STEREO
INTEGRATED AMPLIFIER

 

 

   
Pioneer_SA-510_Stereo_Integrated_Amplifier_web.jpg (57617 bytes)

Pioneer_SA-510_Stereo_Integrated_Amplifier_collage.jpg (326743 bytes)

NEW ADDITION
 
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty
 PIONEER SA-510

 STEREO INTEGRATED AMPLIFIER

(C)
C.B.S.

SOLD 2/22/07

 

 

 

Pioneer_SA-510_Stereo_Integrated_Amplifier_web.jpg (57617 bytes)

Pioneer_SA-510_Stereo_Integrated_Amplifier_collage.jpg (326743 bytes)

PIONEER SA-510
STEREO INTEGRATED AMPLIFIER

SOLD

 

 

Pioneer_SA-510_Stereo_Integrated_Amplifier_web.jpg (57617 bytes)

Pioneer_SA-510_Stereo_Integrated_Amplifier_collage.jpg (326743 bytes)

PIONEER SA-510
STEREO INTEGRATED AMPLIFIER

SOLD 2/1/06
 

   

  

         NEW ADDITION 4/3/10
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CheckMarkSmall_web.jpg (792 bytes)  warranty
VINTAGE 
PIONEER
  STEREO
  INTEGRATED AMPLIFIER
PIONEER SA-520
  AMP
#...
949S
  Circa 1981-82

 MIJ 
SOLD 11/3/10




 

   




PIONEER SA-600
STEREO INTEGRATED AMPLIFIER
Pioneer_SA-608_Integrated_Amplifier_web.jpg (26944 bytes)

Pioneer_SA-608_Integrated_Amplifier_collage.jpg (280415 bytes)

NEW ADDITION
PIONEER SA-608
STEREO INTEGRATED AMPLIFIER
SOLD 6/15/05

 

 



   


(Click on above thumbnails to enlarge photos)

CheckMarkSmall_web.jpg (792 bytes)  warranty
 PIONEER STEREO INTEGRATED AMPLIFIER
         PIONEER SA-608 SA510
#...016D 
"
WORLD AC POWER"
 Circa 1978-'80
 MIJ
SOLD 12/13/12
SHIPPED TO KANSAS

Our technician has completely gone through and 'Certified' this unit. Following ext / int visual inspection entire unit was cleaned inside and out including all contacts, switches and controls. Switches and controls now clean sounding and performing solidly.....(text archived)...

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

   

On our test bench the internal amplifiers of this particular unit, #...016D, produced XX volts per channel at 8 ohms for XX watts per channel and XX volts at 4 ohms for XX watts per channel via discrete outputs (2x NEC 2SB705A & 2x 2SD745A)
 Idle current draw  180mA.
DC out measured at <8mV on either side.
Very quiet with Floor noise measured at 2mVAC.



Pioneer SA-608/SA-6800 Original Specifications:

"
Continuous Power output of XX Watts per channel, min. @ X Ohms from 20Hz to 20kHz @ <XXX%THD or XX Watts per channel, min. @ 4 Ohms from 20Hz to 20kHz @ <XXX%THD."
(text archived)...

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

   


  Design type: ....
 Damping Factor: XX@ XXXkHz

 - THD & IMD; XX% at full rated power into X
Ω w/ XXXkHz @ XXX% @ 1W
 Freq Response: XXXkHz at full rated power
 
S/N: XXXdB for 'non-phono' inputs

 
Input Sensitivities 'non-phono' inputs: ....(text archived)...

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

   

  Bass Control;  XXdB @
XXHz
  Treble Control;  XXXdB @ XXkHz
 Subsonic Filter;  XXdB / oct @ XXkHz
Loudness; 
....(text archived)...

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

   


Phono Section:
Phono MM Sensitivity: XXXXkHz

Phono MM Maximum Input Level: XXXmV RMS
Phono THD: XX% @ 1kHz
 Freq Response: XXXXkHz at full rated power
S/N:
XXdB

Again, as stated before, our technician has completely refurb'd this Pioneer SA-608 Integrated Stereo Amplifier, cleaning and testing all and it gets our full 'Certification'......
......
Includes our 30 day limited warranty!
PIONEER SA-608 INTEGRATED AMP
 Cond. 8.5++

(C) R.R.
SOLD 12/13/12
SHIPPED TO KANSAS

 

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

 

 

Pioneer_SA708_Integrated_Amplifier_Web.jpg     Pioneer_SA-708_Integrated_Amplifier_Collage.jpg

NEW LISTING 1/13/14
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CheckMarkSmall_web.jpg (792 bytes)  warranty
PIONEER STEREO INTEGRATED AMPLIFIER
PIONEER SA-708 / SA708

 
#...0164D
 "
WORLD AC POWER"
  Circa 1978-'80
  MIJ

 For sale
SOLD 1/16/14
SHIPPED TO NEW MEXICO

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

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

  Voltage selector corrected for 120VAC.

  Left channel driver board re-built, replacing parts as necessary.

  Relay cover removed, and contacts burnished.

  Bias and DC offset adjusted to correct spec.

  Meters calibrated per service manual.

  Switches and controls now clean sounding and performing solidly.

 
  All functions tested for perfect operation.

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

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

  Following electronic refurb, entire unit was cosmetically detailed. (text archived)...

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

   


 
(C) K.K.
SOLD 1/16/14
SHIPPED TO NEW MEXICO

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

 

 

   
Pioneer_SA-710_Stereo_Integrated_Amplifier_web.jpg (65927 bytes)

Pioneer_SA-710_Stereo_Integrated_Amplifier_collage.jpg (281673 bytes)

PIONEER SA-710
STEREO INTEGRATED AMPLIFIER
SOLD 1/10/05
Pioneer_SA-710_Stereo_Integrated_Amplifier_web.jpg (65927 bytes)

Pioneer_SA-710_Stereo_Integrated_Amplifier_collage.jpg (281673 bytes)


 
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes) warranty

PIONEER
SA-710
STEREO INTEGRATED AMPLIFIER

SOLD 7/20/06

 

 

 


    

PIONEER SA-900
STEREO
INTEGRATED AMPLIFIER
SOLD
Pioneer_SA-950_Stereo_Integrated_Amplifier_web.jpg (57919 bytes)

Pioneer_SA-950_Stereo_Integrated_Amplifier_collage.jpg (351542 bytes)

PIONEER SA-950
STEREO INTEGRATED AMPLIFIER
AMP
MIJ

SOLD

 

 

 
     
Pioneer_SA-5200_web.jpg (16364 bytes)

PIONEER SA-5200
INTEGRATED STEREO POWER AMPLIFIER
SOLD


         NEW ADDITION 4/27/10
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CheckMarkSmall_web.jpg (792 bytes)  warranty
 
  PIONEER
   
VINTAGE STEREO
   INTEGRATED AMPLIFIER
          SA-6500
SA6500
   #...
0707
   Circa 1977-
79
   MIJ
 
SOLD 5/13/10

  
 

 

Pioneer_SA-6800_Stereo_Integrated_Amplifier_Amp_web.jpg (27425 bytes)   Pioneer_SA-6800_Stereo_Integrated_Amplifier_collage.jpg (160240 bytes)

PIONEER SA-6800
STEREO INTEGRATED AMPLIFIER
SOLD

 

 



     


               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

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

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

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

  Solder joints reflowed on all possible high heat and stress points

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

  All functions tested for perfect operation.

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

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

  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!

  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.

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 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


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

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

 Bias adjusted to correct spec.

 Meters calibrated per service manual.

 Switches and controls now clean sounding and performing solidly.

 
 All functions tested for perfect operation.

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

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

 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
....(text archived)...

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


(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)
 ....(text archived)...

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


- "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 ....(text archived)...

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

 
Design type: 2 Channels, Integrated Pre /
Class AB operation Power Amplifier
Power Output: Continuous power output, 10Hz-50,000Hz:
 ....(text archived)...

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


 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)
....(text archived)...

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



Input Freq Response range (non phono inputs): 5-100,000Hz

 
Phono Section:

Freq Response: 20Hz-20kHz RIAA EQ
 ....(text archived)...

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



 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 5/4/12
(Click on above thumbnails to enlarge photos)
CheckMarkSmall_web.jpg (792 bytes)  warranty
 PIONEER INTEGRATED STEREO AMPLIFIER
 SA-9100 SA9100
 OLD-SCHOOL, 2-CHANNEL STEREO
 INTEGRATED AMPLIFIER
#...1869
 Circa 1973-75 
  "WORLD AC POWER"
 MIJ

SOLD 5/7/12
  This unit has had complete service including cleaning everything including all switches, controls and contacts (no easy task on this amp as gaining access to ALL of the controls requires complete disassembly of the front 'chassis' panel (behind the face panel) and removal of control circuit boards. Just FYI incase you're embarking on this venture yourself on one). We also replaced the 'Power' and 'Protection' lamps with fresh bulbs. Following bench work, entire unit was cosmetically detailed inside and out.
.....
 Features include:
 

.......
(text archived)...


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

   

 

 
 Pioneer SA-9100 Specifications:
 
 
 
 Design type: ......
 Damping Factor: ......

- THD & IMD;
......
 Freq Response: ......
 
S/N: ......(text archived)...

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

   


 
Input Sensitivities 'non-phono' inputs: ......
 
Input Sensitivity Power Amp: ......
  Bass Control;  ......
  Treble Control; 
......
 Output:
.....
 
(text archived)...

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

   


Phono Section:
Phono MM Sensitivity:
......
Phono MM Maximum Input Level:
....
 
S/N on Phono MM w/ 5mv signal:
....
(text archived)...

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

   


 ....Again, we have complete gone through and tested all functions of this unit. It sounds incredible....
 PIONEER SA-9100 INTEGRATED STEREO AMPLIFIER
 Cosmetic Cond. 8.5++
(C)
B.M.
SOLD 5/7/12

 

(Above text 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
 
 

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

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

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

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).

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

Solder joints reflowed on probable high heat and high stress points

 New 8V lamps installed (#25-140)

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

 All functions tested for perfect operation.

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

 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!

 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.

   
....(text archived)...

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


, 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 
....(text archived)...

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


- 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
 ....(text archived)...

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


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
 
....(text archived)...

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


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.)


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NEW ADDITION 10/20/07
 
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 CheckMarkSmall_web.jpg (792 bytes) warranty
PIONEER SA-9500
STEREO INTEGRATED AMPLIFIER

SOLD 11/24/07

 
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Pioneer_SA-9500_Stereo_Integrated_Amp_collage1.jpg (213499 bytes)      Pioneer_SA-9500_Stereo_Integrated_Amp_collage2.jpg (263912 bytes)   Pioneer_SA-9500_collage3.jpg (225205 bytes)

Pioneer_SA-9500_scopeview.jpg (185115 bytes)

PIONEER SA-9500 
STEREO INTEGRATED AMPLIFIER

SOLD

 

 

 

      


        NEW LISTING 7/13/12
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CheckMarkSmall_web.jpg (792 bytes)  warranty
VINTAGE
PIONEER STEREO INTEGRATED AMPLIFIER
PIONEER SA-9500-II
STEREO INTEGRATED AMP
   #...6568S
Circa 1977-80
  "WORLD AC POWER"
MIJ

for sale
SOLD 10/17/12

SHIPPED TO NEW ZEALAND

Our technician has completely gone through and 'Certified' this unit. Following ext / int visual inspection entire unit was cleaned inside and out including all contacts, switches and controls. Switches and controls now clean sounding and performing solidly. Power switch indicator replaced. Fresh heat-sink compound applied to all 4 output transistors. Output section bias / DC offset adjusted......(text archived)...

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

   

    
On our test bench the internal amplifiers of this particular unit, #...6568S, produced XX volts per channel at 8 ohms for XX watts per channel and XX volts at 4 ohms for XX watts per channel via discrete outputs (2x NEC 2SB618A & 2x 2SD588A)
 Idle current draw  .XA.
DC offset measured at <XmV on either side.
Very quiet with Floor noise measured at XX mVAC.

   
____________________________
   
(text archived)...

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

   
   
Original Pioneer SA-9500-II Specifications:

  
 
  
 Design type: ......
 

 Again, as stated before, our technician has completely refurb'd this Pioneer SA-9500-II Stereo Integrated amplifier, cleaning and testing all and it gets our full 'Certification'. Can include a pdf 'e' copy of the Pioneer SA-9500-II Owners / Users Manual. ...
....
Includes our 30 day limited warranty.
Pioneer SA-9500-II Stereo Integrated amplifier
Condition 8.5+

SOLD 10/17/12

SHIPPED TO NEW ZEALAND

 

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


 

  

Pioneer_Spec_1_Stereo_Pre-amp_Preamp_preamplifer_web.jpg (27549 bytes)    Pioneer_Spec_1_Stereo_Pre-amp_Preamp_preamplifer_collage.jpg (204408 bytes)

Pioneer_Spec-1_Stereo_Preamp_Rear_Panel_views_collage.jpg (125883 bytes)        Pioneer_Spec-1_Stereo_Pre-amp_cosmetics_collage.jpg (71556 bytes)

PIONEER SPEC-1
STEREO PRE-AMPLIFIER

SOLD 9/15/03

 

    

           NEW LISTING 11/29/16
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CheckMarkSmall_web.jpg (792 bytes) warranty
VINTAGE PIONEER POWER AMPLIFIER
PIONEER SPEC-4 POWER AMP
#...1420M

"WORLD AC POWER"
Circa 1977-79
M.I.J.
SOLD 6/14/17
SHIPPED TO GEORGIA


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

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

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

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

  Solder joints reflowed on all possible high heat and stress points

  PC Molex connector pins burnished    

  All output transistors removed and individually tested. Fresh heat sink compound was used on re-installation, of course. 
 

  Driver Boards had their 'primary' electrolytic caps changed.     

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

  All functions tested for perfect operation.

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

  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!

  Following restoration procedures, the unit was run 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, each internal amplifier of this particular unit, #...1420M, produced peak power of 38 Volts per channel at 8 Ohms for xxWatts per channel and 28 Volts at 4 Ohms for xxWatts per channel via discrete, TO-3 / Metal Cased output transistors (4x 2SB554 & 4x 2SD424).(text archived)...

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

   

AC Idle current at 750mA. DC offset adjusted to a SUPER LOW <1.0mVDC L&R & floor -60dB.

 
____________________________

One of the most sought after among the vintage power amps of the audio world by Pioneer, the SPEC-4 Power Amplifier. Super build quality, with great features. Works great, Sounds FABULOUS AND HUGE! Enough power to handle most any speaker you 'want to throw at it', and pretty much any size room you would might have. Conversely, enough power and detail down low for quieter listening situations. Unit does have a few small dings / battle-scars on the right, front panel (see photos above). Fortunately it does make up for it in high performance!

Pioneer SPEC-4 Features Include:


- Dual AC Power Supply featuring...(text archived)...

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

   


 


(text archived)...


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

   ...
AC current

Original Pioneer SPEC-4 Specifications:

Power output: xxWpc continuous RMS @ 8 Ohms & no more than xx% THD @ 20-20kHz
xxxWpc continuous RMS @ 8 Ohms & no more than xx% THD @ 20-20kHz
Power Bandwidth: xx0Hz(text archived)...


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

   

THD:
no more than 0x% THD @ 20-20kHz at full rated power
IHF IMD: xx% @ full rated power & 8 Ohms & xx% @ 75Wpc
Freq Response of power amp section:xxHz to xx,000 Hz @ 1W / +0dB, -1dB
Signal / Noise Ratio:  xxdB w/ inputs shorted(text archived)...


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

   

Damping Factor: xx @ 8 Ohms
Speaker Impedance: xxxOhms w/ 4 Ohms minimum
Input Sensitivity @ RCA's for rated output: xV @ 50kΩ
Max power consumption: 760 Watts

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. Other than the previously mentioned battle scars on the face plate (see photos above), the unit is in good cosmetic condition. Performs and sounds great! This is a very musical sounding amp with lots of punch! Includes a pdf, 'e' copy, download of the Pioneer SPEC-4 owners / users / instruction manual, the service manual as well as a full line 1978-1979 Pioneer Full Line Brochure (if the purchaser so desires). Measures 19" wide x 7.5" tall x 17.5" deep and weighs an impressive 54 lbs unpacked. Includes our standard 30 day limited warranty.
Cond. 9.5
Pioneer SPEC-4 Power Amplifier

(C) D.W.
SOLD 6/14/17
SHIPPED TO GEORGIA



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