Yamaha DX-21, 1985, made in Japan

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SPECIFICATIONS:

Polyphony - 8 notes
Oscillators - 4-Operator Digital FM synthesizer
#Instruments - (1) Monotimbral
Filter - None
Effects - Chorus
Keyboard - 61 Keys (no velocity/aftertouch sensitivity)
Memory - 128 patches and 16 performances
Control - MIDI (w / Velocity and Aftertouch)
Date Produced - 1985