Sequential Circuits Pro-One Vintage Analogue Synthesizer SN 3124 w/ Original Box

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"Early J-Wire model in excellent condition. Recently serviced. Fully functioning.
Bought new in 1981. One owner. Always kept in a smoke-free and pet-free environment.

Outstanding vintage monophonic analogue synthesizer from the early 1980s.
Two oscillators. Amazing filter. Two envelope shapers. Big, unique sound.
Extensive modulation and cross-modulation possibilities.
Two 20 step sequencers with real-time transposition from keyboard.
There is no other synthesizer like it.

With original box and manual … both now a bit shabby (see photos).

Modulation wheel cracked and repaired many years ago (see photos)."