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Sansui model QS-500 Quadphonic Synthesizer and Rear Channel Amplifier. This device allows you to play Regular Matrix quadraphonic encoded source material as well as synthesizing quadraphonic sound from any source. Use it with your exisitng two channel receiver (any brand). It provides 30 watts RMS into 8 ohms or 40 watts RMS into 4 ohms per channel for the rear speakers. Can also be used as a stand-alone 30 watt stereo amplifier. It is in very good condition and has been serviced. Our original Performance Verification Report and copy of the owner's/service manual included. Also includes the original box and packing.




Rear Speakers: Off, System A, System B, System
Rear Volume
Level Set:
Front Balance
Main Balance
Rear Balance


Function: 2 Channel, Concert Hall 1, Concert Hall 2, Surround Normal, Surround Right Quarter Turn, Surround Half Turn,
Tape Monitor 4 Channel:
Tape Monitor 2 Channel: Source/


Left Front Level VU
Right Front Level VU
Left Rear Level VU
Right Rear Level VU

Rear Panel:

AC Outlet Unswitched
AC Outlet Switched
Front Amp From Rec Out (L, R)
Front Amp To Tape Mon (L, R)
Tape Monitor 2-CH Rec (L, R, DIN)
Tape Monitor 2-CH Mon (L, R, DIN)
Tape Monitor 4-CH Rec (L, R, F, R, DIN)
Tape Monitor 4-CH Mon (L, R, F, R, DIN)
Speakers A (L, R)
Speakers B (L, R)

Shipping Weight: 30 lbs.



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