Not sure what the purple dial does, but all other buttons responded when tested.
Vintage 1990s Boxed Habitat Zip Chrome Wire Metal Adjustable Office Footrest
Vintage 1990s Meinl PM2 Pair of Concert Maracas Percussion Instrument
Vintage 1990s Yamaha PSR-3 Portatone Keyboard - Retro FM Synthesis - Tested
Casio CT-680 Vintage 1990s Synthesizer Keyboard
Vintage 1990s Fender Twin Amp Blackface 2x12 Valve Amplifier Combo w/ Footswitch
Vintage 1990s Casio SA-3 White Keyboard Synth 25 Sound Tonebank RARE
