VINTAGE / USED SANSUI STEREO RECEIVERS
REFERENCE PHOTOS / SOLD ARCHIVE
   
Reference Photo gallery-archive of vintage / Used Sansui Home Stereo Receivers that we have had in the past. Vintage 1970's models such as the Sansui stereo 331, 551, 771, 881, 1000, 1000x, 2000, 2000x, 4000, 4000x, 5000, Sansui 5000a, 5000x, 5050, 5500, 6060, 790 / 7070, 8080, 8080db, 990, 9090 / 9090db, Sansui G-3000, G-4500 / 4700, G-5000 / 5700, G-7700, G-8000 / 8700DB, 871DB, Z-7000, Z-9000 and Sansui stereo quadraphonic (quadriphonic) QR-4500, QR-6500, QRX-8001, Sansui receivers silver face with wood case.
Photo reference gallery of vintage Sansui Home Stereo Receivers that we have had in the past that have been sold. Keep checking as we always have more, NON-'Home-Theater', 'Old-School' 2-Channel Sansui Receivers coming.
 Some of our 'past' listings may have a portion of their original text remaining, but not necessarily intact, and not likely complete as that has been archived for potential future purposes. All photos and text, copyrighted and protected as stated at bottom of page. Click the link below for current inventory.

(Click on above thumbnails to enlarge photos)
NEW LISTING 10/4/07
   warranty
VINTAGE SANSUI STEREO RECEIVER 331  #6
STEREO RECEIVER
Circa 1977-79
  331 #...5301
SOLD 10/22/07
 (C)
 C.B.S.

 

            NEW LISTING 7/28/128
  (Click on above thumbnails to enlarge photos)
warranty
CLASSIC SANSUI STEREO RECEIVER
 SANSUI 350A RECEIVER #2
 #...0707
   Circa '73-75
   "WORLD AC POWER" ™
  MIJ
SOLD 2/27/13
SHIPPED TO MARYLAND
Our technician has completely gone through and 'Certified' this unit. Everything was cleaned inside and out including cleaning inside and out including all contacts, switches and controls. Speaker switch replaced with another, original Sansui 350A speaker switch. 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. All meter and dial lamps replaced for trouble-free service. Amplifier section had output bias and DC offset adjusted to spec levels. All inputs 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. 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 and into a 4 Ohm Load!
  
On our test bench, both this unit's amplifiers produced peak power of XX volts per channel @ 8 ohms for XX watts and XX volts @ 4 ohms for XX watts per channel via discrete, TO-3, metal cased outputs with 1 kHz input. (4x Hitachi 2SC1030). AC Idle current at .1A, DC offset output <4mvDC either channel. Floor noise at 2.5mVAC either channel.
  ____________________________
  
   This Sansui 350A stereo receiver would be .... 

.....

   Sansui 350A Features include:

.......

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

Original Sansui 350A Specifications:

POWER / PRE AMP SPECIFICATIONS:
Music Power: XX
Cont rated RMS Power:XX watts @ 8 Ohms, 20-20k & <XX THD
 THD: <XX% @ full rated power
 IMD: <XX% @ full rated power
  Power Bandwidth (IHF): XXkHz
  Damping factor: XX @ 8Ω & full bandwidth
  Hum and Noise:  XXdB on Phono w/ 2.5mV input and XXdB w/ 5.0mV input
  Input Sensitivity AUX / Tape: XXmV @ 100kΩ|
  Bass Control:  ±XXdB @ X0hz
  Treble Control:  ±XXdB @ X0khz
  High Filter:  -XXdB @ X0kHz
  Low Filter:  -XXdB @ X0Hz
  "Loudness" Contour:  +XdB @ Xhz & +XdB @ XXkHz (volume control @ -30dB)

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

  TUNER SPECS FOR FM:
  Tuning Range: 88-108mHz
Capture Ratio: 1XXdB
  S/N: > XXdb Stereo
Selectivity: >4XXdB
Image Frequency Rejection: >XX dB at 98 MHz
IF Rejection: > XXdB at 98 MHz
  Spurious Response Rejection: >XXdB
  THD 65dBf @ 1kHz, Mono:  <XX%
Stereo Separation Ratio: >XXdB @ 50Hz to 10kHz
 
  TUNER SPECS FOR AM:
  Tuning Range: 535-1605kHz
 IF (Image Frequency) Rejection: >XXdB @ 1kHz
Selectivity: >XXdB @ 1kHz
Useable Sensitivity (External Antenna / Bar Antenna): XμV/m / 250 μV/m
 
  PHONO SECTION SPECS:
  Freq Response: XXkHz
Channel Separation: > XXdB
  Input Sensitivity: XXmV @ 50kΩ
  Max input: ~2XXmV @ 50kΩ

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

Again, as stated before, we have completely gone through this Sansui 350A, stereo receiver, cleaning and testing all and it gets our full  'Certification'. Brushed aluminum face and knobs in like NEW condition. Unit looks and sounds great. Wood grained, vinyl case in great condition. Includes an 'e' copy pdf download of the original Sansui 350A brochure. .....Comes with our standard 90 day limited warranty.
 CLASSIC SANSUI 350A RECEIVER
SOLD 2/27/13
SHIPPED TO MARYLAND

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

    

 NEW LISTING 12/5/09
(Click on above thumbnails to enlarge photos)
 warranty
VINTAGE SANSUI STEREO RECEIVER
SANSUI MODEL 661 RECEIVER
#...1889
Circa 1974-76
  "WORLD AC POWER" ™
MIJ
(C)
C.B.S.
SOLD 2/5/10

    

NEW LISTING 3/22/17
(Click on above thumbnails to enlarge photos)
warranty
RESTORED / REFURBISHED / FULLY SERVICED
VINTAGE SANSUI STEREO RECEIVER
SANSUI 661
#...0083
Circa 1974-76
  "WORLD AC POWER" ™
MIJ
SOLD 3/23/17
SHIPPING TO MONTANA
ü  Our technician has completely gone through and 'Certified' this unit.

ü  Everything was cleaned inside and out including all contacts, switches and controls.

ü  AC voltage selector corrected and correct NEW 'mains' fuse installed

ü  Skewed control shafts straightened

ü  All question-able and common 'stress point' solder joints re-flowed

ü  Bias current adjusted to correct level

ü  DC offset adjusted to a low level ‘0’ mVDC (±10) on either channel

ü  Headphone floor noise tested and found to be very quiet, to MAX volume

ü  We also aligned the tuner for optimum AM & FM performance as older internal tuner components have always drifted on vintage gear over the years.
VERY GOOD TUNER! AM reception WAY above average, FM reception incredible, PUNCHY, with GREAT SEPARATION and IMPECCABLY CLEAN!!!

ü  All meter, dial, and FM stereo indicator and FM function lamps replaced for trouble-free service

ü  Entire unit cleaned / detailed cosmetically 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! All functions test fine.

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

ü  We also aligned the tuner for optimum performance on both AM and FM. All functions tested for perfect operation. All inputs tested and both sides produce clean and even sine waves! No power supply hum of any kind. It's dead silent! Tone controls are super quality, Alps brand, "full-size", de-tented potentiometers. All functions tested for perfect operation.

You will not be disappointed. Total restoration time investment ~7 hours.  

ü  Following the above tech work, on our test bench, this unit's amplifiers produced 17.5 Volts @ 8 Ω per channel for 38 Watts / channel and 14.5 Volts @ 4 Ω per channel for 52 Watts / channel via discrete, metal cased, TO-3 style output devices at 1kHz. (4x Sankyo 2SC1111).
AC idle current draw measured at 0.2A.
DC offset adjusted to 0 mVDC ±10.
Bias current adjusted to 19mA.
Floor Noise Level tested at 2.5mVAC / -58dBm.
 
Again, as stated before, we have completely gone through this unit cleaning and testing all. Driver boards serviced and tuner aligned....

 Includes an 'e' copy, pdf download of the Sansui 661 brochure if purchaser desires. Comes with original box and packing. Measures 17.5" wide x 12" deep x 5.25" high and weighs 22 lbs unpacked. Includes our standard 90 day limited warranty!
SANSUI 661
 Cond. 8.5++
SOLD 3/23/17
SHIPPING TO MONTANA
(C) R.R.

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

    

        NEW ADDITION 4/12/12
(Click on above thumbnails to enlarge photos)
warranty
CLASSIC SANSUI 2-CHANNEL STEREO RECEIVER
SANSUI MODEL 771 RECEIVER #2
#...0923
Circa 1974-76
  "WORLD AC POWER" ™
MIJ
SOLD 7/23/12
SHIPPED TO OHIO

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

   

           NEW LISTING 5/18/12
  (Click on above thumbnails to enlarge photos)
warranty
VINTAGE-CLASSIC SANSUI STEREO RECEIVER
SANSUI 990DB RECEIVER
EURO / MILITARY 'BLACK-FACE' VERSION OF THE SANSUI 9090DB RECEIVER
 #...0061
 CIRCA 1977-79
 "WORLD AC POWER"™
 MIJ
SOLD  7/19/12
Our technician has completely gone through this unit cleaning everything including all switches (actually accessed (requires 'splitting' the unit horizontally) and fully flooded), controls and contacts for quiet, positive operation. 
Extra attention is ALWAYS necessary on Sansui 990 / 9090 units to the 'Input Selector' and 'Dolby' switches, and they were completely disassembled, thoroughly cleaned, burnished, had contacts 're-sprung' and tested (only about half the 990's, 8080's and 9090's have input selector switches that will respond to cleaning only). On this unit, he actually bypassed the wafer portion that routes the dial light current, and direct wired the lights to be lit constantly (the issue with the dial lights on Sansui 880 / 8080-DB / 990 / 9090-DB series receivers is that the contacts were, by design, too anemic to handle the 1 Amp+ current they require).  He also re-flowed all dial lamp solder joints, especially at the 'extremes' of the board. Now dial lamps light solidly and inputs sonically intact. DC measurements taken 'post-preamp', 'post driver board' and 'post power amp'. Questionable driver board replaced with another original, inspected component by component & contacts burnished. Once reseated, DC measurements re-taken. Once driver board was replaced, then the tech moved to address the output transistors. Substitute 'generic' outputs and bad original outputs removed and we 'hand picked' from our extensive collection of original Sansui 9090 output transistors, and closely matched 'quads' of outputs to re-install. Fresh heat sink compound used of course. Green 'LED' Power indicator's 'current limiting' circuit components replaced as necessary. The 'typically broken', Sansui 9090 AM antenna socket replaced . 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. All dial, all meter (including the very difficult to replace power meter lamps ), all function indicator and stereo indicator lamps replaced with new units for years of trouble-free service. Also we 'painstakingly' replaced the 'dial pointer' lamp. The dial string was cleaned and re-tensioned. Once unit's electronics were addressed, the unit was cosmetically detailed inside and out, including rubbing the Real Walnut Wood veneer case with a fresh coat of lemon oil. All original, extruded face, and milled aluminum knobs in great shape after detailing. Internal and external dial screen and window in perfect shape. All inputs tested, including both phonos, and both amplifiers 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. The real Walnut wood veneer in good condition with only very minor wear. Following restoration procedures, the unit was operated 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.
  
  On our test bench, this particular Sansui 990DB, #...0061, amplifiers each produced XX volts per channel for 1XXwatts per channel @ 8 Ω via discrete output & XXvolts per channel for XXwatts per channel @ 4 Ω via discrete, Metal cased, original TO-3 outputs (Toshiba 4x  2SB554 & 4x 2SD424 output transistors).
 (AC draw at idle 350mA tested,
DC offset adjusted to <4mV each side.
Floor noise measured at L=00.1mVAC and R=00.1mVAC)

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

 great tuners, and amp's that you can "darn near weld with". The tuner quality on both AM & FM is exceptional due to aspects such as a fully shielded tuning capacitor .
SANSUI 990DB STEREO RECEIVER
(C)
B.G.
SOLD  7/19/12

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

   

NEW LISTING 1/15/15
warranty
VINTAGE-CLASSIC SANSUI STEREO RECEIVER
SANSUI 990DB RECEIVER
EURO / MILITARY 'BLACK-FACE' VERSION OF THE SANSUI 9090DB RECEIVER
 #...0061
 CIRCA 1977-79
 "WORLD AC POWER"™
 MIJ
SOLD 4/7/15
SHIPPED TO TEXAS
Our technician has completely gone through and 'Certified' this unit, cleaning everything including all switches (actually accessed (requires 'splitting' the unit horizontally) and fully flooded), controls and contacts for quiet, positive operation. 
Extra attention is ALWAYS necessary on Sansui 990 / 9090 units to the 'Input Selector' and 'Dolby' switches, and they were completely disassembled, thoroughly cleaned, burnished, had contacts 're-sprung' and tested (only about half the 990's, 8080's and 9090's have input selector switches that will respond to cleaning only). On this unit, he actually bypassed the wafer portion that routes the dial light current, and direct wired the lights to be lit constantly (the issue with the dial lights on Sansui 880 / 8080-DB / 990 / 9090-DB series receivers is that the contacts were, by design, too anemic to handle the 1 Amp+ current they require).  He also re-flowed all dial lamp solder joints, especially at the 'extremes' of the board. Now dial lamps light solidly and inputs sonically intact. DC measurements taken 'post-preamp', 'post driver board' and 'post power amp'. Questionable driver board replaced with another original, inspected component by component & contacts burnished. Once reseated, DC measurements re-taken. Once driver board was replaced, then the tech moved to address the output transistors. Substitute 'generic' outputs and bad original outputs removed and we 'hand picked' from our extensive collection of original Sansui 9090 output transistors, and closely matched 'quads' of outputs to re-install. Fresh heat sink compound used of course. Green 'LED' Power indicator's 'current limiting' circuit components replaced as necessary. The 'typically broken', Sansui 9090 AM antenna socket replaced . 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. All dial, all meter (including the very difficult to replace power meter lamps ), all function indicator and stereo indicator lamps replaced with new units for years of trouble-free service. Also we 'painstakingly' replaced the 'dial pointer' lamp. The dial string was cleaned and re-tensioned. Once unit's electronics were addressed, the unit was cosmetically detailed inside and out, including rubbing the Real Walnut Wood veneer case with a fresh coat of lemon oil. All original, extruded face, and milled aluminum knobs in great shape after detailing. Internal and external dial screen and window in perfect shape. All inputs tested, including both phonos, and both amplifiers 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. The real Walnut wood veneer in good condition with only very minor wear. Following restoration procedures, the unit was operated 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.
  
  On our test bench, this particular Sansui 990DB, #...0061, amplifiers each produced 35 volts per channel for 153 watts per channel @ 8 Ω via discrete output & 31 volts per channel for 242 watts per channel @ 4 Ω via discrete, Metal cased, original TO-3 outputs (Toshiba 4x  2SB554 & 4x 2SD424 output transistors).
 (AC draw at idle 350mA tested,
DC offset adjusted to <4mV each side.
Floor noise measured at L=00.1mVAC and R=00.1mVAC)
  ___________________________ 
  
  Here's the first Sansui 990DB we've ever had! (yes, we had this one a couple years ago, and the current owner is 'moving up' to HUGE separates, and yes we've had a few 9090DB's, but no 'Military Market' 990DB's) These are known for great tuners, and amp's that you can "darn near weld with". The tuner quality on both AM & FM is exceptional due to aspects such as a fully shielded tuning capacitor   .

The amps are incredibly warm sounding with HUGE punch and headroom. Very "Musical" sounding with real output transistors and huge power supplies.  A testament to the...


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


J.W. (C)
SOLD 4/7/15
SHIPPED TO TEXAS
(Above text, including 'Features' and 'Specs' listing property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details) 
 

NEW LISTING 5/4/07
 (Click on above thumbnails to enlarge photos)
warranty
VINTAGE SANSUI AM/FM STEREO RECEIVER
2-CHANNEL STEREO RECEIVER
 MODEL SANSUI 2000X
SOLD 5/4/07

  



     

NEW ADDITION 4/19/12
(Click on above thumbnails to enlarge photos)
warranty
VINTAGE STEREO RECEIVER
SANSUI 2000X RECEIVER #2
 #...1843
   Circa '73-76
   "WORLD AC POWER" ™
  MIJ
SOLD 5/8/12

     

NEW ADDITION 12/7/12
(Click on above thumbnails to enlarge photos)
warranty
VINTAGE STEREO RECEIVER
SANSUI 2000X RECEIVER #3
 #...1261
   Circa '73-76
   "WORLD AC POWER" ™
  MIJ
SOLD 1/14/13
SHIPPING TO NORTH CAROLINA
 Our technician has completely gone through and 'Certified' this unit. Everything was cleaned inside and out including all contacts, switches, controls and I/O jacks. Control Pot shafts re-sprung. Internal and external fuses checked and replaced where necessary. We also aligned the tuner for optimum AM & FM performance as older internal tuner components have always drifted on vintage gear over the years. All meter, dial, and FM stereo lamps replaced for trouble-free service (very difficult to do on this series of receiver). All 4 power transistors removed and fresh heat-sink compound applied. Tuner string re-tensioned and flywheel string 'grip' improved. Amplifier section had output bias and DC offset adjusted to spec levels. 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. All inputs 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. 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 and into a 4 Ohm Load!
  
   While this unit was originally rated at XX wpc, on our test bench, both this unit's amplifiers, #...1843 produced peak power of XX volts per channel @ 8 ohms for XX watts and XX volts @ 4 ohms for XX watts per channel via discrete, TO-3, metal cased outputs with 1 kHz input. (4x Sanken 2SC1111,


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

(same as Toshiba 2SC793)). DC offset adjusted to and measured at 2.6mVDC L&R. Idle current draw within spec. Floor noise measured at 6mVAC w/ AUX shunted.
  ____________________________
  
This 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. Lot's 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.
 

   Sansui 2000X Features include:

.......

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

Original Sansui 2000X Specifications:

POWER / PRE AMP SPECIFICATIONS:
Music Power: XX
Cont rated RMS Power:XX watts @ 8 Ohms, 20-20k & <XX THD
 THD: <XX% @ full rated power
 IMD: <XX% @ full rated power
  Power Bandwidth (IHF): XXkHz
  Damping factor: XX @ 8Ω & full bandwidth
  Hum and Noise:  XXdB on Phono w/ 2.5mV input and XXdB w/ 5.0mV input
  Input Sensitivity AUX / Tape: XXmV @ 100kΩ|
  Bass Control:  ±XXdB @ X0hz
  Treble Control:  ±XXdB @ X0khz
  High Filter:  -XXdB @ X0kHz
  Low Filter:  -XXdB @ X0Hz
  "Loudness" Contour:  +XdB @ Xhz & +XdB @ XXkHz (volume control @ -30dB)

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

  TUNER SPECS FOR FM:
  Tuning Range: 88-108mHz
Capture Ratio: 1XXdB
  S/N: > XXdb Stereo
Selectivity: >4XXdB
Image Frequency Rejection: >XX dB at 98 MHz
IF Rejection: > XXdB at 98 MHz
  Spurious Response Rejection: >XXdB
  THD 65dBf @ 1kHz, Mono:  <XX%
Stereo Separation Ratio: >XXdB @ 50Hz to 10kHz
 
  TUNER SPECS FOR AM:
  Tuning Range: 535-1605kHz
 IF (Image Frequency) Rejection: >XXdB @ 1kHz
Selectivity: >XXdB @ 1kHz
Useable Sensitivity (External Antenna / Bar Antenna): XμV/m / 250 μV/m
 
  PHONO SECTION SPECS:
  Freq Response: XXkHz
Channel Separation: > XXdB
  Input Sensitivity: XXmV @ 50kΩ
  Max input: ~2XXmV @ 50kΩ


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

   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 beautiful condition as well.....Comes with our standard 90 day limited warranty.
 SANSUI 2000X STEREO RECEIVER
   Cond. 8.5+
SOLD 1/14/13
SHIPPED TO NORTH CAROLINA

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

SANSUI 2000X VOLTAGE CHANGE PHOTOS

 

  
    



   

 

NEW ADDITION 5/10/13
(Click on above thumbnails to enlarge photos)
  warranty
VINTAGE STEREO RECEIVER
SANSUI 2000X STEREO RECEIVER
 #...1204
Circa '73-76
"WORLD AC POWER" ™
MIJ

SOLD 7/10/13
SHIPPED TO TEXAS

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  Repaired power supply and power supply board

ü  Replaced ‘leaky’ transistors on driver board  (which by the way, once biased, brought the idle temperature of the heat-sink down from ~220 degrees to ~72°)

ü  All 4 power transistors removed and tested for leakage, the re-installed with fresh heat-sink compound applied.

ü  Repaired AM circuit board

ü  Re-flowed multiple solder joints

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

ü  All meter, dial, and FM stereo lamps replaced for trouble-free service (very difficult to do on this series of receiver).

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

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

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 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 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 ~14 hours.

   While this unit was originally rated at 55 wpc, on our test bench, both this unit's amplifiers, #...1204 produced peak power of 17 volts per channel @ 8 ohms for 36 watts and 14.5 volts @ 4 ohms for 52 watts per channel via discrete, TO-3, metal cased outputs with 1 kHz input. (4x Toshiba 2SC793, (same as Sanken 2SC1111)). Idle current draw within spec. Floor noise measured at 2mV AC w/ AUX shunted).
  ____________________________
  
This is from what many consider to...

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

 
SOLD 7/10/13
SHIPPED TO TEXAS

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

 

   

NEW LISTING
(Click on above thumbnails to enlarge photos)
warranty
VINTAGE SANSUI STEREO RECEIVER
SANSUI MODEL 4000 RECEIVER #2
 "WORLD AC POWER" ™
SOLD 10/4/07

            NEW LISTING 10/13/12
(Click on above thumbnails to enlarge photos)
  warranty
VINTAGE STEREO RECEIVER
SANSUI 5000A
 #...0112
   Circa ~1970- ~'72
  MIJ
SOLD 2/23/13
SHIPPED TO GEORGIA
Our technician has completely gone through and 'Certified' this unit. Everything was cleaned inside and out including all contacts, switches and controls. We also aligned the tuner for optimum AM & FM performance as older internal tuner components have always drifted on vintage gear over the years. All meter, dial, function indicator and FM stereo indicator lamps replaced for trouble-free service (very difficult to do on this series of receiver and there's a total of 12). All 4 power transistors removed and tested for leakage. DC offset and bias current adjusted to correct levels. Entire unit cleaned / detailed cosmetically inside and out. All inputs 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. 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 and into a 4 Ohm Load!
  
   While this unit was originally rated at 55 wpc, on our test bench, both this unit's amplifiers, #...0112 produced peak power of ~XX volts per channel @ 8 ohms for XX watts and XX volts @ 4 ohms for XX watts per channel via discrete, TO-3, metal cased outputs with 1 kHz input. (2x Toshiba 2SC1079 & 2x 2SD118). Idle current measured at 260mA. Bias current & DC offset / output adjusted to levels within spec. Floor noise measured at <4mVAC.
  ____________________________
  

   Sansui 5000A Features include:....
    

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

Sansui 5000A Original Specifications:

POWER / PRE AMP SPECIFICATIONS:
Music Power: XX
Cont rated RMS Power:XX watts @ 8 Ohms, 20-20k & <XX THD
 THD: <XX% @ full rated power
 IMD: <XX% @ full rated power
  Power Bandwidth (IHF): XXkHz
  Damping factor: XX @ 8Ω & full bandwidth
  Hum and Noise:  XXdB on Phono w/ 2.5mV input and XXdB w/ 5.0mV input
  Input Sensitivity AUX / Tape: XXmV @ 100kΩ|
  Bass Control:  ±XXdB @ X0hz
  Treble Control:  ±XXdB @ X0khz
  High Filter:  -XXdB @ X0kHz
  Low Filter:  -XXdB @ X0Hz
  "Loudness" Contour:  +XdB @ Xhz & +XdB @ XXkHz (volume control @ -30dB)

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

  TUNER SPECS FOR FM:
  Tuning Range: 88-108mHz
Capture Ratio: 1XXdB
  S/N: > XXdb Stereo
Selectivity: >4XXdB
Image Frequency Rejection: >XX dB at 98 MHz
IF Rejection: > XXdB at 98 MHz
  Spurious Response Rejection: >XXdB
  THD 65dBf @ 1kHz, Mono:  <XX%
Stereo Separation Ratio: >XXdB @ 50Hz to 10kHz
 
  TUNER SPECS FOR AM:
  Tuning Range: 535-1605kHz
 IF (Image Frequency) Rejection: >XXdB @ 1kHz
Selectivity: >XXdB @ 1kHz
Useable Sensitivity (External Antenna / Bar Antenna): XμV/m / 250 μV/m
 
  PHONO SECTION SPECS:
  Freq Response: XXkHz
Channel Separation: > XXdB
  Input Sensitivity: XXmV @ 50kΩ
  Max input: ~2XXmV @ 50kΩ

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


   Again, as stated before, we have completely gone through this Sansui 5000A, Stereo Receiver cleaning and testing all and it gets our full 'Certification' ..... Includes a pdf 'e' download copy of a '5000A-Series' owners manual. Comes with our standard 90 day limited warranty.
SANSUI 5000A STEREO RECEIVER
   Cond. 8.5
SOLD 2/23/13
SHIPPED TO GEORGIA

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

NEW LISTING 12/18/13
(Click on above thumbnails to enlarge photos)
  warranty
VINTAGE SANSUI 5000A STEREO RECEIVER
 #...1292
   Circa ~1970- ~'72
  MIJ
(C) R.R.
SOLD 2/3/14
SHIPPED TO CALIFORNIA

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

NEW LISTING 4/19/13
(Click on above thumbnails to enlarge photos)
  warranty
VINTAGE SANSUI STEREO RECEIVER
SANSUI 5000X IN WOOD CABINET
#...3882
CIRCA 1973-76
MIJ
SOLD 4/23/13
SHIPPED TO INDIANA

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

ü  Everything was cleaned inside and out including all contacts, switches and controls.

ü  We also aligned the tuner for optimum AM & FM performance as older internal tuner components have always drifted on vintage gear over the years. VERY GOOD TUNER! AM reception WAY above average, FM reception incredible, PUNCHY and IMPECCABLY CLEAN!!! due to the triple FET FM front end and the quality of the restoration.

ü  All meter, dial, function indicator and FM stereo indicator lamps replaced for trouble-free service (very difficult to do on this series of receiver and there's a total of 12).

ü  All 4 power transistors removed, tested for leakage and reinstalled with fresh heat-sink compound.

ü  DC offset checked (although as it’s a ‘cap couple’ amp, there better not be any DC) and bias current adjusted to correct levels.

ü  Two stuck dual section controls were replaced and shafts lubed.

ü  Damaged illuminated dial indicator was replaced.

ü  Entire unit cleaned / detailed cosmetically inside and out. Only cosmetic issues with this unit are some scuffing of the wood cabinet and very minor wear on the face.

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! All functions test fine.

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

On our test bench, each internal amplifier of this particular unit, #...3882, produced peak power of XX volts @ 8Ω per channel for XX watts / channel and XX volts @ 4Ω per channel for XX watts / channel via Discrete output devices at 1khz. (4X Toshiba metal case TO-3 2SC1079). AC Idle current at .220A, & floor noise <1.4 mVAC.

  ____________________________
  
 This is from what many consider to be one of Sansui's best eras. The Sansui 5000X 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 quite a few 'X000' series Sansui units and they are among some of the best sounding, 'vintage', 'main stream' amplifiers we have heard.  Lot's 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.

   Sansui 5000X Features include:

.......

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

Original Sansui 5000X Specifications:

POWER / PRE AMP SPECIFICATIONS:
Music Power: XX
Cont rated RMS Power:XX watts @ 8 Ohms, 20-20k & <XX THD
 THD: <XX% @ full rated power
 IMD: <XX% @ full rated power
  Power Bandwidth (IHF): XXkHz
  Damping factor: XX @ 8Ω & full bandwidth
  Hum and Noise:  XXdB on Phono w/ 2.5mV input and XXdB w/ 5.0mV input
  Input Sensitivity AUX / Tape: XXmV @ 100kΩ|
  Bass Control:  ±XXdB @ X0hz
  Treble Control:  ±XXdB @ X0khz
  High Filter:  -XXdB @ X0kHz
  Low Filter:  -XXdB @ X0Hz
  "Loudness" Contour:  +XdB @ Xhz & +XdB @ XXkHz (volume control @ -30dB)

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

  TUNER SPECS FOR FM:
  Tuning Range: 88-108mHz
Capture Ratio: 1XXdB
  S/N: > XXdb Stereo
Selectivity: >4XXdB
Image Frequency Rejection: >XX dB at 98 MHz
IF Rejection: > XXdB at 98 MHz
  Spurious Response Rejection: >XXdB
  THD 65dBf @ 1kHz, Mono:  <XX%
Stereo Separation Ratio: >XXdB @ 50Hz to 10kHz
 
  TUNER SPECS FOR AM:
  Tuning Range: 535-1605kHz
 IF (Image Frequency) Rejection: >XXdB @ 1kHz
Selectivity: >XXdB @ 1kHz
Useable Sensitivity (External Antenna / Bar Antenna): XμV/m / 250 μV/m
 
  PHONO SECTION SPECS:
  Freq Response: XXkHz
Channel Separation: > XXdB
  Input Sensitivity: XXmV @ 50kΩ
  Max input: ~2XXmV @ 50kΩ


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

Again, as stated before, we have completely gone through this Sansui 5000X, Stereo Receiver cleaning and testing all and it gets our full 'Certification'. This is probably the 'cleanest' Sansui Receiver in the optional wood case from this era we've ever had. This Sansui 5000X is also in the originally optional Walnut Wood Veneer Case that is in great condition and really sets its look. Very ‘Handsome’ unit. Receiver looks, performs and sounds great! Includes a pdf 'e' download of a Sansui '5000-Series' owners manual.......


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

Comes with our standard 90 day limited warranty.
SANSUI 5000X STEREO RECEIVER W/ WOOD CABINET
Cond. 8.5+++
SOLD 4/23/13
SHIPPED TO INDIANA
(C) M.R.
 
(Above text, in it's entirety, property of www.oaktreevintage.com / Oak Tree Enterprises, LLC. See 'Copyright Information' page for details)

warranty

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

  
SANSUI 5050 STEREO RECEIVER SPECIFICATIONS:


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

Again, as stated before, we have completely gone through this Sansui 5050, stereo receiver, cleaning and testing all and it gets our full 'Certification'. Only cosmetic issue worth mentioning is a small cigarette burn in the middle of the top bonnet and a small, 'black' area inside one of the meter backgrounds. Overall looks, works and sounds great! This thing is incredible when lit up at night or in a dark room!! Measures 18.25" wide x 6.5" tall x 13" deep and weighs 24 lbs unpacked. Includes our standard 90 day limited warranty.
SANSUI 5050 STEREO RECEIVER
Cond. 8.5
SOLD 12/23/12
SHIPPING TO TEXAS
(C) R.R.

    

NEW ADDITION 12/28/15
 (Click on above thumbnails to enlarge photos)
warranty
VINTAGE SANSUI STEREO RECEIVER
SANSUI 7900Z RECEIVER
#...0045
CIRCA 1981-82
MIJ
“WORLD AC POWER"

 Includes our standard 90 day limited warranty!
SANSUI 7900Z STEREO RECEIVER
Condition 8.5 ++
SOLD 7/26/16
SHIPPING TO CALIFORNIA
(C) 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 7/13/12
  (Click on above thumbnails to enlarge photos)
warranty
VINTAGE SANSUI STEREO RECEIVER
SANSUI 8080 RECEIVER
 #...0786
 CIRCA 1977-79
 "WORLD AC POWER"™
 MIJ
SOLD 7/31/12
SHIPPED TO ARKANSAS
for sale
Our technician has completely gone through this unit cleaning everything including all switches (actually accessed (requires 'splitting' the unit horizontally) and fully flooded), controls and contacts for quiet, positive operation. 
Extra attention is ALWAYS necessary on Sansui 8080 / 9090 units to the 'Input Selector' and 'Dolby / Tape-Monitor' switches, and they were completely disassembled, thoroughly cleaned, burnished, had contacts 're-sprung' and tested (only about half the 990's, 8080's and 9090's have input selector switches that will respond to cleaning only). On this unit, he actually bypassed the wafer portion that routes the dial light current, and direct wired the lights to be lit constantly (the issue with the dial lights on Sansui 880 / 8080-DB / 990 / 9090-DB series receivers is that the contacts were, by design, too anemic to handle the 1 Amp+ current they require). He also re-flowed all dial lamp solder joints, especially at the 'extremes' of the board. Now dial lamps light solidly and inputs sonically intact.  DC measurements taken 'post-preamp', 'post driver board' and 'post power amp'. 'Sansui 2624-Driver-Board 'removed, inspected / tested component by component & contacts burnished. Once reseated, DC measurements re-taken. Once driver board was tested, then the tech moved to address the output transistors. All output transistors removed and individually tested. Fresh heat sink compound used of course. Green 'LED' Power indicator's 'current limiting' circuit components replaced as necessary. 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. All dial, all meter (including the very difficult to replace power meter lamps  ), all function indicator and stereo indicator lamps replaced with new units for trouble-free service. Dial light solder contacts re-flowed. Also we 'painstakingly' replaced the 'dial pointer' lamp. The dial string was cleaned and re-tensioned. Once unit's electronics were addressed, the unit was cosmetically detailed inside and out. All original, extruded face, and milled aluminum knobs in great shape after detailing. Internal and external dial screen and window in perfect shape. We removed the dial window and re-finished the black mask behind it. All inputs tested, including phono input, and both amplifiers 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. The Walnut wood grain, vinyl wrapped in good condition with minor wear. Following restoration procedures, the unit was operated 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.
  
  On our test bench, this particular Sansui 8080, #...0786, amplifiers each produced 27.8 volts per channel for 96 watts per channel @ 8 Ω via discrete output & 24 volts per channel for 144 watts per channel @ 4 Ω via discrete, Metal cased, original TO-3 outputs (Sanken 4x  2SC1116 output transistors).
 (AC draw at idle 245mA tested,
DC offset adjusted to <3mV each side.)
 The tuner quality on both AM & FM is exceptional due to aspects such as a fully shielded tuning capacitor . The 'typically broken' Sansui 8080 AM antenna socket still intact and 'un-broken'.
SANSUI 8080 STEREO RECEIVER
  Cond. 8.5++
SOLD 7/31/12
SHIPPED TO ARKANSAS

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

          

          NEW LISTING 7/13/12
  (Click on above thumbnails to enlarge photos)
warranty
VINTAGE SANSUI STEREO RECEIVER
SANSUI 8080 RECEIVER
 #...1680
 CIRCA 1977-79
 MIJ
SOLD 1/7/13
SHIPPED TO MICHIGAN
 Our technician has completely gone through and 'Certified' this unit. Everything was cleaned inside and out including all switches (actually accessed (requires 'splitting' the unit horizontally) and fully flooded), controls and contacts for quiet, positive operation. 
Extra attention is ALWAYS necessary on Sansui 8080 / 9090 units to the 'Input Selector' and 'Dolby / Tape-Monitor' switches, and they were completely disassembled, thoroughly cleaned, burnished, had contacts 're-sprung' and tested (only about half the 990's, 8080's and 9090's have input selector switches that will respond to cleaning only). On this unit, he actually bypassed the wafer portion that routes the dial light current, and direct wired the lights to be lit constantly (the issue with the dial lights on Sansui 880 / 8080-DB / 990 / 9090-DB series receivers is that the contacts were, by design, too anemic to handle the 1 Amp+ current they require).  He also re-flowed all dial lamp solder joints, especially at the 'extremes' of the board. Now dial lamps light solidly and inputs sonically intact. DC measurements taken 'post-preamp', 'post driver board' and 'post power amp'. 'Sansui 2624-Driver-Board 'removed, inspected / tested component by component & contacts burnished. Once reseated, DC measurements re-taken. Once driver board was tested, then the tech moved to address the output transistors. All output transistors removed and individually tested. Fresh heat sink compound used of course. Green 'LED' Power indicator's 'current limiting' circuit components replaced as necessary. 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. VERY GOOD TUNER! Generally AM reception in a stereo receiver is treated as an 'after thought', but the AM reception on this 8080, #...1680 is WAY above average. VERY GOOD TUNER! FM reception as well great and IMPECCABLY CLEAN!!! All dial, all meter (including the very difficult to replace power meter lamps  ), all function indicator and stereo indicator lamps replaced with new units for trouble-free service. Dial light solder contacts re-flowed. Also we 'painstakingly' replaced the 'dial pointer' lamp. The dial string was cleaned and re-tensioned. Once unit's electronics were addressed, the unit was cosmetically detailed inside and out. The extruded aluminum face great shape after detailing. The knobs are intact, but do have numerous 'flea bits' and minor scuffs on them. Internal and external dial screen and window in perfect shape. We removed the dial window and re-finished the black mask behind it. The lower wood strip that would normally be on the bottom of the face plate is missing. All inputs tested, including phono input, and both amplifiers 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. The Walnut wood grain, vinyl wrapped in good condition with minor wear. Following restoration procedures, the unit was operated 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 and into a 4 Ohm Load!
  
  On our test bench, this particular Sansui 8080, #...1680, amplifiers each produced XX.X volts per channel for XX watts per channel @ 8 Ω via discrete output & XX volts per channel for XX watts per channel @ 4 Ω via discrete, Metal cased, original TO-3 outputs (Sanken 4x  2SC1116 output transistors).
 (AC draw at idle 280mA tested,
DC offset adjusted to <0.5mV each side.)
  ___________________________ 
  
  Here's the second Sansui 8080 we've had, that's made it all the way through our restoration with no 'terminal' issues, since 2003! These receivers are known for .... The tuner quality on both AM & FM is exceptional due to ...or . The amps are....

   Sansui 8080 Features include:

.......

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

Original Sansui 8080 Specifications:

POWER / PRE AMP SPECIFICATIONS:
Music Power: XX
Cont rated RMS Power:XX watts @ 8 Ohms, 20-20k & <XX THD
 THD: <XX% @ full rated power
 IMD: <XX% @ full rated power
  Power Bandwidth (IHF): XXkHz
  Damping factor: XX @ 8Ω & full bandwidth
  Hum and Noise:  XXdB on Phono w/ 2.5mV input and XXdB w/ 5.0mV input
  Input Sensitivity AUX / Tape: XXmV @ 100kΩ|
  Bass Control:  ±XXdB @ X0hz
  Treble Control:  ±XXdB @ X0khz
  High Filter:  -XXdB @ X0kHz
  Low Filter:  -XXdB @ X0Hz
  "Loudness" Contour:  +XdB @ Xhz & +XdB @ XXkHz (volume control @ -30dB)

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

  TUNER SPECS FOR FM:
  Tuning Range: 88-108mHz
Capture Ratio: 1XXdB
  S/N: > XXdb Stereo
Selectivity: >4XXdB
Image Frequency Rejection: >XX dB at 98 MHz
IF Rejection: > XXdB at 98 MHz
  Spurious Response Rejection: >XXdB
  THD 65dBf @ 1kHz, Mono:  <XX%
Stereo Separation Ratio: >XXdB @ 50Hz to 10kHz
 
  TUNER SPECS FOR AM:
  Tuning Range: 535-1605kHz
 IF (Image Frequency) Rejection: >XXdB @ 1kHz
Selectivity: >XXdB @ 1kHz
Useable Sensitivity (External Antenna / Bar Antenna): XμV/m / 250 μV/m
 
  PHONO SECTION SPECS:
  Freq Response: XXkHz
Channel Separation: > XXdB
  Input Sensitivity: XXmV @ 50kΩ
  Max input: ~2XXmV @ 50kΩ

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

Again, as stated before, we have completely gone through this Sansui 5000X, Stereo Receiver cleaning and testing all and it gets our full 'Certification'. This is probably the 'cleanest' Sansui Receiver in the optional wood case from this era we've ever had. This Sansui 5000X is also in the originally optional Walnut Wood Veneer Case that is in great condition and really sets its look. Very ‘Handsome’ unit. Receiver looks, performs and sounds great! Includes a pdf 'e' download of a Sansui '5000-Series' owners manual.......


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

This Sansui 8080 classic stereo receiver is great looking and fabulous sounding! Again, we have done EXTENSIVE refurbishment / restoration work (~16+ hours) on this unit to insure it's performance, and it gets our full 'Certification'. With the exception of a few very minor 'tic' marks on knobs, the face plate & window are in great cosmetic condition (see photos above). The 'typically broken' Sansui 8080 AM antenna socket still intact an... Includes an 'e-copy' of the download pdf Sansui 9090 owners manual (will be applicable to the 8080) & Service manual..... Includes our standard 90 day limited warranty.
SANSUI 8080 STEREO RECEIVER
  Cond. 8.5
(C) M.R.
SOLD 1/7/13
SHIPPED TO MICHIGAN

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

 

      

NEW LISTING 5/18/12
  (Click on above thumbnails to enlarge photos)
warranty
VINTAGE SANSUI STEREO RECEIVER
SANSUI 9090DB RECEIVER
 #...0129
 CIRCA 1977-79
 "WORLD AC POWER"™
 MIJ
SOLD 6/4/12
SHIPPED TO NORTH DAKOTA
Our technician has completely gone through this unit cleaning everything including all switches (actually accessed (requires 'splitting' the unit horizontally) and fully flooded), controls and contacts for quiet, positive operation. 
Extra attention is ALWAYS necessary on Sansui 8080 / 9090 units to the 'Input Selector' and 'Dolby' switches, and they were completely disassembled, thoroughly cleaned, burnished, had contacts 're-sprung' and tested (only about half the 990's, 8080's and 9090's have input selector switches that will respond to cleaning only). DC measurements taken 'post-preamp', 'post driver board' and 'post power amp'. 'Sansui 2624-Driver-Board 'removed, inspected / tested component by component & contacts burnished. Once reseated, DC measurements re-taken. Once driver board was tested, then the tech moved to address the output transistors. Substitute 'generic' outputs and bad original outputs removed and we 'hand picked' from our extensive collection of original Sansui 9090 output transistors, and matched 'quads' of outputs to re-install. Fresh heat sink compound used of course. Green 'LED' Power indicator's 'current limiting' circuit components replaced as necessary. 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. All dial, all meter (including the very difficult to replace power meter lamps  ), all function indicator and stereo indicator lamps replaced with new units for years of trouble-free service ('Stereo' indicator replaced with an LED). Also we 'painstakingly' replaced the 'dial pointer' lamp. The dial string was cleaned and re-tensioned. Once unit's electronics were addressed, the unit was cosmetically detailed inside and out, including rubbing the Real Walnut Wood veneer case with a fresh coat of lemon oil. All original, extruded face, and milled aluminum knobs in great shape after detailing. Internal and external dial screen and window in perfect shape. All inputs tested, including both phonos, and both amplifiers 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. The real Walnut wood veneer in good condition with only very minor wear.  Following restoration procedures, the unit was operated 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.
  
  On our test bench, this particular Sansui 9090DB, #...0129, amplifiers each produced 35 volts per channel for 153 watts per channel @ 8 Ω via discrete output & 31 volts per channel for 242 watts per channel @ 4 Ω via discrete, Metal cased, original TO-3 outputs (Toshiba 4x  2SB554 & 4x 2SD424 output transistors).
 (AC draw at idle 420mA tested,
DC offset adjusted to <2mV each side.)
  ___________________________ 
  
  Here's the first Sansui 9090DB we've had, that's made it all the way through our restoration with no 'terminal' issues, since 2004! These receivers are known for great AM/FM tuners, and amplifiers that you can "darn near weld with". The tuner quality on both AM & FM is exceptional due to aspects such as a fully shielded tuning capacitor . The amps are incredibly warm sounding with HUGE punch and headroom. Very "Musical" sounding with real output transistors and huge power supplies.  A testament to the strength of the power supply is that the results we achieved on the test bench. Most receivers will have from 20-40% more power at 4 Ohms than they do at 8 Ohms. This is primarily due to power supply limitations. However, the Sansui 9090 at 4 Ohms is almost double what the receiver's amplifiers are are rated at for 8 Ohms!!!
The difference in tone of an 8080 or 9090, with a 'clean bill of health', and most other receivers is astronomical. It's a difference that must be experienced to be appreciated.  Again, we done EXTENSIVE refurbishment / restoration work (~18 hours) on this unit to insure it's performance. With the exception of a few very minor 'tic' marks on the front panel, the face plate, window and knobs are in great cosmetic condition (see photos above). The 'typically broken' Sansui 9090 AM antenna socket still intact and 'un-broken'.
SOLD 6/4/12
SHIPPED TO NORTH DAKOTA

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

NEW LISTING 5/10/13
  (Click on above thumbnails to enlarge photos)
  warranty
VINTAGE SANSUI STEREO RECEIVER
THE CLASSIC SANSUI G-7700X
BIG POWER AND SIZE!
Circa 1980-82
#...0827
   "WORLD AC POWER" ™
MIJ
SOLD 5/17/13
SHIPPED TO SOUTH DAKOTA

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

ü  Everything was cleaned inside and out including all contacts, switches and controls.

ü  Skewed control shafts straightened

ü  Electrolytic power supply filter capacitors tested for leakage

ü  All 8 power transistors removed, tested for leakage

ü  All transistors re-installed with fresh heat-sink compound (usually good for 20-30 years)

ü  Intermittent ground painstakingly located and corrected

ü  Numerous component connections re-flowed

ü  Bias current adjusted to correct levels.

ü  DC offset adjusted to correct levels.

ü  We also aligned the tuner for optimum AM & FM performance as older internal tuner components have always drifted on vintage gear over the years. VERY GOOD TUNER! AM reception WAY above average, FM reception incredible, PUNCHY and IMPECCABLY CLEAN!!! due to the super quality FM front end and the quality of the restoration.

ü  All dial indicator lamps replaced for trouble-free service (dial / meter lamps ‘blue tinted’ to original color)

ü  Entire unit cleaned / detailed cosmetically 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! All functions test fine.

ü  Following restoration procedures, the unit was run continuously at medium volume, as all our amplifiers / 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 time investment ~10 hours.  

On our test bench, the internal amplifiers of this receiver #...0827 produced XX volts per channel @ 8 ohms with 1Khz input for XX watts and XX volts per channel @ 4 ohms with 1Khz input for XX watts via discrete outputs. (2x 2SA1106 & 2x 2SC2581).
 AC Idle current at 500mA, Bias adjusted and DC offset output adjusted to <2 mvDC either channel. Floor noise @ <0.2mVAC either channel.
   ____________________________

This is one of the dozen or so, largest 'receivers' we have had. At 4 ohms, a single channel was able to produce ....
 These are great receivers and this one has been 'certified' following the refurb by Oak Tree Vintage and is in great condition!!! 
Sansui G-7700 Stereo Receiver Features:
.....
 ... 50 or 60 Hz AC and voltages from 110-240 volts AC
 
Original Sansui G-7700 Specifications:
  "The G-7700 has a continuous power output of XXX watts per channel min @ 8 ohms from 20 hertz to 20,000 hertz with no more than XXX% THD (measured utilizing AUX input)"
 
POWER / PRE AMP SPECIFICATIONS:
THD:
XX% @ XXX wpc @ 8 Ohms
Freq Response of power amp section: @ full rated power 20-20kHz
 Potential frequency response of power amp section @ 1w: 7 Hz to 90KHz, + 0 dB,- 1 dB
 IMD utilizing AUX: XX% @ XXwpc
Hum / Noise Ratio: XXdB
Slew Rate: X0 @ 8Ω full bandwidth (One of the main reasons this thing is so punchy)
Damping factor: X0 @ 8Ω full bandwidth (One of the other main reasons this thing is so punchy)
Tone Control ranges:
Bass: +/-XXdB @ X0Hz
Treble: +/-XdB @ XkHz
Hi Filter: -

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

Loudness Contour w/ vol @-30dB: X
Pre-Amp Input Sensitivity at all inputs except phono & mic: XXmV
Microphone Input Impedance: Xk Ohms
Microphone Input Sensitivity: XmV
Input Freq Response (except Phono & Mic): XX0kHz
Tape Output Impedance: XXk Ohms
Tape Output: XmV
Pre-Amp S/N @ 'Tape' & 'AUX': XXdB
Channel Separation Phono / All Other: XdB

TUNER SPECS FOR FM:
Tuning Range: 88-108MHz
Freq Response: 30-15kHz per FCC Regulations
S/N: > XXdB Mono @ 65dBf
S/N: > XXdB Stereo @ 65dBf
Useable Mono RF Sensitivity dBf / μV: XdBf / 1XμV
Useable Stereo RF Sensitivity in dBf / μV: XdBf
Capture Ratio: X0dB
Signal for 50dB quieting, Mono dBf / μV: XdBf
Signal for 50dB quieting, Stereo dBf / μV: XdBf
De-Emphasis: selectable 25 or 75 μ-sec
THD w/ 100% modulation @ 1kHz, Mono: XX%
THD w/ 100% modulation @ 1kHz, Stereo: X%
IF Response Ratio: XXdB
Spurious Response Ratio / Rejection: XXdB
IF Response Ratio: XXdB
FM Alternate Channel Selectivity: XXdB
Stereo Separation: XkHz

TUNER SPECS FOR AM:
Tuning Range: 530-1600kHz
RF Sensitivity: 300uV/meter or 15uV @ binding posts
Alternate Channel Selectivity: 33dB
Distortion @ 30% modulation & 80dB/m: <0.5%
Signal to Noise Ratio: 46dB

PHONO SECTION SPECS:
Freq Response: 20-20kHz (way better than either of it's little brothers, the G-5700 or G-6700)
S/N: XV input
Input Sensitivity: XkΩ
Overload limit: XkHz

Again, we have completely gone through this Sansui G-7700 Stereo Receiver, as stated above and 'certified' it's ready to go! This is an...
Wood grain, vinyl wrapped case in great shape as well with only normal, minor cosmetic wear. Entire unit looks NEW! After restoration, receiver performs and sounds great! 

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

 Cosmetically, this unit is in very good condition. Brushed aluminum face and knobs all original and in great condition. Unit looks great and sounds....Includes our standard 90 day limited warranty!
SANSUI G-7700 STEREO RECEIVER
 Cond. 8.5
(C) M.R.
SOLD 5/17/13
SHIPPED TO SOUTH DAKOTA
 

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

         

 

warranty

On our test bench, this particular Sansui G-9000, #...0492, amplifiers each produced 38 volts per channel for 180 watts per channel @ 8 Ω via discrete output & 35 volts per channel for 306 watts per channel @ 4 Ω via discrete, Metal cased, original TO-3 outputs.
 (AC draw at idle 623mA tested,
DC offset adjusted to 0mV each side.
Floor noise measured at L=00.0mVAC and R=00.0mVAC)
  ___________________________ 
  
  Here's the first Sansui G-9000 we've ever had! We've had a couple of '8000's', but never a "9000". What a beautiful piece. I happen to think this series was the most impressive looking receivers ever built by any manufacturer. The controls have the ...

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

 The front end is the same as the massive and famous ....

Sansui G-9000 Features include:
 
...

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

Sansui G-9000 Original Specs:
  "The G-9000 has a continuous power output of 1...
 
POWER / PRE AMP SPECIFICATIONS:
THD; 0.xx% @ full rated power
Potential Freq Response of Pre-amp section;
measured @ 1w; xxHz +0.2dB / -1.5dB  ±
Potential Freq Response of power amp section;
Potential frequency response of power amp section xxHz & @ 1w; +0dB / -3.0dB  ±
 IMD utilizing AUX;
 0xxx% @ full rated power / 20-20kHz

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Slew Rate; xx V / μ-sec
Damping factor; xxx @ 8Ω & full bandwidth
Hum and Noise;  xxdB @ AUX / Tape
Input Sensitivity AUX / Tape; xxxx0mV @ 47kΩ
Tape 1/2 Output level, via RCA; xx0mV
Tape 2 Output level, via DIN I/O; xxmV
 PreOutput level; xxV
Stereo / Channel Separation @ 1kHz; xxdB
Bass Control;  xxB @ xxhz
Bass Turnover;  xx0hz or xxhz
 Mid Control;  ±xxdB @ xxkhz
Treble Control;  ±xxdB @ xx0khz
Treble Turnover;  xxkhz orxxkhz


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Low Filter;  -xxdB @ xxHz @ xxdB Oct
High Filter;  xxdB @ xxkHz @ xxdB Oct
"Loudness" Contour;  +xxdB @ xxhz, +xxdB @ xxkhz (w/ volume set at -30dB)
 
SANSUI G-9000 TUNER SPECS FOR FM (most tuner specs are improved over it's smaller sibling, the Sansui G-8000);
Tuning Range; xxmHz
Freq Response; xx-15kHz
S/N @ 65dBf; > xxdb Stereo
S/N @ 65dBf; > xxdb Mono
Useable Mono Sensitivity; xxdBf (xxV)
Useable Stereo Sensitivity; xxdBf
Capture Ratio; xxdB
Image Response Ratio; xx0dB
Spurious Noise Ratio; xxdB
IF Response Ratio; xxdB
Signal for 50dB quieting, Mono; 1xx5dBf
Signal for 50dB quieting, Stereo; xx0dBf
THD 65dBf @ 1kHz, Mono;  0.0xx%
THD 65dBf @ 1kHz, Stereo;  0.xx%
Stereo Separation @ 100Hz; xxdB
Stereo Separation @ 1kHz; xxdB
Stereo Separation @ 10kHz; xxdB
FM Alternate Channel Selectivity; xxdB @ xx0 Hz

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


TUNER SPECS FOR AM;
Tuning Range; 5xxkHz
S/N; > xxdb
Useable Sensitivity; xxV / m with ferrite stick antenna or xxB / m with external antenna
Selectivity; xxdB
Distortion: 0.xx%

PHONO SECTION SPECS;
Freq Response; xxkHz
 S/N; xxdB, ref w/ xxmV input
THD; 0.0xx% @ xx mV @ 1kHz
Stereo / Channel Separation @ 1kHz; xxdB
Input Sensitivity; xxmV @ 47kΩ
Overload limit; xx mV @ 1kHz

Again, as stated before, we have completely gone through this unit cleaning, refurbishing and testing all. This is an incredible sounding receiver in all aspects. Due to it's huge power output (again, we were able to get a 'shade' over xx watts per channel, into a 4 Ohm load), even at very low volumes it sound's like a "Class-A" amplifier. The controls are very ...

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

 Again, only cosmetic issues are minor, ie; a small tic in the upper, left corner of the face plate, and some minor scuffs on the sides (see above photos). Beautiful aluminum face, with it's beveled dial glass and all original, milled knobs in fabulous shape. Wood grain, vinyl wrapped case in fine shape as well. Unit looks great and sounds HUGE! ...

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 Includes a pdf / 'e-copy' download of the Sansui G-9000 Service manual. Measures 22.2" wide x 8" tall x 19.5" deep and weighs and heavy 60 lbs unpacked. Includes our standard 90 day limited warranty.
SANSUI G-9000 / G-901 STEREO RECEIVER
Cond. 8.5+
SOLD 12/29/15
SHIPPING TO MAINE
M.R. (C)

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