JVC Add Amplifier Model 5100 (Quad Box).
A strange item and a piece of Quadraphonic history.
Inputs/Controls
SEA 5 band graphic EQ, Master Volume, Split pot 4 ch 2 ch balance control, Source; Tape/Aux. Function; Normal/SFCS (links to stereo operation). Mode; 4ch/2ch. Internal switchover between 240/120 volts.
250 front x 330 deep x 120 height, 8Kg
The discoloration in the front image would appear to be fading. It will not clean off but the face is in otherwise good condition. There is a modification to the top of the case where an air ventilation screen has been fitted. It is a reasonably well done job.