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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
 (Click on above thumbnails to enlarge photos)
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 90 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
 (Click on above thumbnails to enlarge photos)

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

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

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

ü  Voltage selector corrected for 120VAC.

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

ü  Relay cover removed, and contacts burnished.

ü  Bias and DC offset adjusted to correct spec.

ü  Meters calibrated per service manual.

ü  Switches and controls now clean sounding and performing solidly.

 
ü  All functions tested for perfect operation.

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

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

ü  Following electronic refurb, entire unit was cosmetically detailed. (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
 (Click on above thumbnails to enlarge photos)
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 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 ADDITION 10/20/07
 
(Click on above thumbnails to enlarge photos)
 CheckMarkSmall_web.jpg (792 bytes) warranty
PIONEER SA-9500
STEREO INTEGRATED AMPLIFIER

SOLD 11/24/07

 
Pioneer_SA-9500_Stereo_Integrated_Amp_web.jpg (84186 bytes)

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
(Click on above thumbnails to enlarge photos)
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 90 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
(Click on above thumbnails to enlarge photos)
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


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

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

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

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

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

ü  PC Molex connector pins burnished    

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

ü  Driver Boards had their 'primary' electrolytic caps changed.     

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

ü  All functions tested for perfect operation.

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

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

ü  Following restoration procedures, the unit was run continuously at medium volume, as all our amplifier / receivers are, into a 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 lot’s 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 90 day limited warranty.
Cond. 9.5
Pioneer SPEC-4 Power Amplifier

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



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

 

 
-

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

 
  -  

 

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

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

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