Korg Poly-61 programmable polyphonic synthesizer, 1982, made in Japan

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SPECIFICATIONS
Polyphony - 6 Voices
Oscillators - DCO1:sawtooth, pulse, and square; DCO-2: sawtooth, square
LFO - 1 LFO can modulate the DCOs or the Filter
Filter - 1 lowpass filter w/ ADSR
Memory - 64 patches
VCA - ADSR
Keyboard - 61 keys
Arpeg/Seq - Arpeggiator with external sync
Effects - Chorus
Control - MIDI (on later Poly-61M models)
Date Produced - 1982 - 1986