Yamaha CS-80

Yamaha CS-80
Manufacturer	Yamaha
Dates	1977 - 1980
Price	US$6900 GB£4950 JP¥1,280,000 [1]
Technical specifications
Polyphony	8 voices, dual layers
Timbrality	Multitimbral
Oscillator	2 per voice
LFO	1 multi-waveform
Synthesis type	Analog subtractive
Filter	2 High-pass 2 Low-pass
Attenuator	ADSR
Aftertouch expression	Yes, polyphonic
Velocity expression	Yes
Storage memory	22 preset 4 user
Effects	chorus, tremolo
Input/output
Keyboard	61-note with velocity and polyphonic aftertouch (on a per note rather than per patch basis)
Left-hand control	Ribbon Controller

The Yamaha CS-80 is an analog synthesizer introduced by Yamaha Corporation in 1977.^[2] It supports true 8-voice polyphony, with two independent synthesizer layers per voice each with its own set of front panel controls, in addition to a number of hardwired preset voice settings and four parameter settings stores based on banks of subminiature potentiometers (rather than the digital programmable presets featured on the Prophet-5 introduced soon after).

It has exceptionally complete performer expression features, such as a layered keyboard that was both velocity-sensitive (like a piano's) and pressure-sensitive ("after-touch") but unlike most modern keyboards the aftertouch could be applied to individual voices rather than in common, and a ribbon controller allowing for polyphonic pitch-bends and glissandos.

Production of the instrument ceased in 1980. Vying with the Sequential Circuits Prophet-5 and Oberheim OB-X polysynths for the title, the CS-80 is often described as the pre-eminent polyphonic analog synthesizer,^[3][4] and, together with the monophonic Moog modular synthesizer, commands amongst the highest resale price of any synthesizer.^[3]