Sequential (company)

Sequential

Formerly	Sequential Circuits Dave Smith Instruments
Founded	1974; 50 years ago (1974)
Headquarters	1527 Stockton Street San Francisco, California, U.S.
Key people	Dave Smith (founder)
Products	Synthesizers
Brands	Prophet
Parent	Focusrite
Website	sequential.com

Sequential is an American synthesizer company founded in 1974 as Sequential Circuits by Dave Smith. In 1978, Sequential released the Prophet-5, the first programmable polyphonic synthesizer, which was widely used in the music industry. In the 1980s, Sequential was important in the development of MIDI, a technical standard for synchronizing electronic instruments.

In 1987, Sequential went out of business and was purchased by Yamaha. Smith continued to develop instruments through a new company, Dave Smith Instruments. In 2015, Yamaha returned the Sequential Circuits trademark to Dave Smith Instruments, which rebranded as Sequential in 2018. In 2021, Sequential was acquired by the British audio technology company Focusrite. Smith died in 2022.