Sequential Circuits
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; it became a market leader and industry standard, used by artists including Michael Jackson, Madonna, and John Carpenter. In the 1980s, Sequential was pivotal 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. History 1974–1980: Founding, first products and Prophet-5 The engineer Dave Smith founded Sequential Circuits in San Francisco in 1974. The first Sequential Circuits product wa ...
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Prophet-5
The Prophet-5 is an analog synthesizer manufactured by the American company Sequential (company), Sequential. It was designed by Dave Smith (engineer), Dave Smith and John S. Bowen (sound designer), John Bowen in 1977, who used Microprocessor, microprocessors, then a new technology, to create the first polyphonic synthesizer with fully programmable memory. This allowed users to store sounds and recall them instantly rather than having to reprogram them manually; whereas synthesizers had once created unpredictable sounds, the Prophet-5 moved synthesizers to producing "a standard package of familiar sounds". Between 1978 and 1984, about 6,000 units were produced across three revisions. In 1981, Sequential released a 10-voice, double-keyboard version, the Prophet-10. Sequential introduced new versions in 2020, and it has been emulated in software synthesizers and hardware. The Prophet-5 has been widely used in popular music and film soundtracks. Development The Prophet-5 was crea ...
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