| Brand | Sequential Circuits |
|---|---|
| Model | Pro-One Model 100 |
| Type | Keyboard Synthesizer |
Check the listing for details. 1982 Sequential Circuits Pro-One Model 100 Vintage Monophonic Analog Synthesizer. Condition: Used. Listed at 2199.99 USD. Up for sale, a circa 1982 Sequential Circuits Pro-One Model 100 monophonic analog synthesizer in excellent condition and in perfect working order. Introduced in 1980, the Pro-One was designed to be a smaller, simpler version of its renowned elder, the Prophet-5.