Korg PolysixReleased in 1981
The Polysix was one of the first affordable polysynths. It is a great-sounding six-voice analog machine with SSM filters, 32 memory locations, and chorus-based effects. Unlike Roland's competing Juno-6, which has stereo outputs from the chorus, the Polysix has only a mono output. It has one analog oscillator per voice, a sub-oscillator, a basic arpeggiator and a Unison mode for stacking all six voices.