Pioneer J-7 Disco Robo (Japan Model 100 Volts)
Pioneer J-7 Disco Robo (Japan Model 100 Volts)
Source: Stereo2Go Forum Reader
Seen on: Buttons & Knobs — randomitemdrop: neontalk: RAD! Disco Sound...
Some info: Pioneer J-7 Disco Robo | The Boombox Wiki
Ah, so despite the name, it's not actually a robot. But put it on top of a roomba...