High Quality Content by WIKIPEDIA articles! The Yamaha CS-80 was a polyphonic analog synthesizer released in 1977. It sported true 8-voice polyphony (with two independent synthesizer layers per voice) as well as a primitive (sound) settings memory based on a bank of micropotentiometers (rather than the digital programmable presets the Prophet-5 would sport soon after), and exceptionally complete performer expression features, such as a splittable keyboard that was both velocity-sensitive (like a... Mehr