A 6-voice
polyphonic digital/
analog hybrid synthesizer with a 61-note
keyboard. Released in
1982, and often compared to the
Yamaha DX7.
The Poly-61 features 2
DCOs per voice. Available
waveforms for DCO1 are
pulse,
sawtooth and
square, while DCO2 only features the last two. As the
filter there is a
resonant low-pass VCF. An
ADSR envelope generator (the
SSM 2056) is available on the
VCA, but unfortunately shares the same envelope with the filter. A very simple
sine-only
LFO is also included.
Other features include a
latchable arpeggiator and
chord memory (which is actually just a
unison mode). 64
patches can be stored in the Poly-61:s
memory, with extra
storage available by using the unit's
tape interface. There is no
MIDI, but the
Poly-61M model released later features it.
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