Sequential Circuits

Sequential Circuits was an influential American electronic instrument manufacturer founded by Dave Smith in 1974. Best known for synthesisers such as the Prophet-5, Prophet-10, Pro-One and Prophet T8, the company also produced notable drum machines including the Drumtraks and TOM. Sequential Circuits also played a key role in the development of MIDI, helping establish the standard that transformed electronic music production in the 1980s.

Sequential Circuits Prophet-5
Decades
Made In U.S.A.
Released in 1978 /
The Sequential Circuits Prophet-5, combined five-voice analogue polyphony with microprocessor-controlled programming and storage of complete synthesiser sounds. As the world’s first fully programmable polyphonic synthesiser and the first musical instrument built around an embedded microprocessor, the Sequential Circuits Prophet-5 established principles of sound storage, recall and computer-controlled analogue synthesis that became fundamental to subsequent generations of electronic instruments.
Made In U.S.A.
Released in 1980 /
The Sequential Circuits Prophet-10 was as a ten-voice, dual-manual programmable analogue synthesizer that expanded the Prophet architecture into a more powerful performance instrument. Combining two independently programmable five-voice sections, four keyboard assignment modes, 64 program memories, extensive modulation, programmable three-band equalisation, automatic tuning and an optional polyphonic sequencer, the Sequential Circuits Prophet-10 represented the most comprehensive implementation of Sequential Circuits’ original Prophet.
Made In U.S.A.
Released in 1984 /
Sequential Circuits Drumtraks is a 13-voice digital drum machine with individual tuning and volume per sound, comprehensive real-time editing, six separate outputs, cassette backup, multi-standard clock sync and MIDI for velocity-sensitive performance and tight integration with contemporary sequencers and keyboards.