Maker
Sequential
American synthesizer maker
Sequential is an American synthesizer maker founded by Dave Smith in 1974, known for the Prophet-5, one of the first programmable polyphonic synthesizers.
Models
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Sequential Prophet-5
Synthesizer · United States
The Sequential Prophet-5, released in 1978, was the first fully programmable polyphonic analog synthesizer, letting players store and recall patches. Its five voices, dual oscillators, and warm sound made it a landmark instrument used across pop, film, and electronic music.
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Sequential Circuits Six-Trak
Synthesizer · United States
The Sequential Circuits Six-Trak, released in 1984, is a six-voice multitimbral analog synthesizer—one of the first that could play a different sound on each voice—with a built-in sequencer and MIDI.
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Sequential Circuits Prophet-600
Synthesizer · United States
The Sequential Circuits Prophet-600, released in 1982, is a six-voice polyphonic analog synthesizer notable as one of the first instruments to ship with MIDI; the very first MIDI connection was famously demonstrated between a Prophet-600 and a Roland synthesizer.
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Sequential Pro 3
Synthesizer · United States
The Sequential Pro 3, introduced in 2020, is a hybrid monophonic and three-note paraphonic synthesizer combining two analog voltage-controlled oscillators with a DSP-based digital wavetable oscillator. It features three switchable filters - a four-pole Prophet-6 low-pass, a four-pole transistor ladder, and a two-pole OB-6 state-variable filter - plus a deep 16-track sequencer. A Pro 3 SE version adds a tilt-up panel and walnut trim.
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Prophet '08
Synthesizer · United States
The Prophet '08, released in 2007 by Dave Smith Instruments, is an eight-voice polyphonic analog synthesizer that updated the Prophet lineage with two oscillators per voice, extensive modulation, and patch memory, reviving the Prophet name for a new generation.
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Sequential Prophet
United States
The Prophet series is Sequential's line of polyphonic synthesizers, beginning with the Prophet-5, the first fully programmable polysynth. It includes the MIDI-pioneering Prophet-600 and, after the company's revival, the Prophet '08.
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Sequential Trigon-6
Synthesizer · United States
The Sequential Trigon-6, introduced in 2022, is a six-voice analog polyphonic synthesizer built around three discrete voltage-controlled oscillators per voice offering simultaneously selectable triangle, sawtooth, reverse-sawtooth, and variable-width pulse waves. It uses a switchable two/four-pole discrete resonant ladder low-pass filter, and is available as a 49-key keyboard or a desktop module, with a 64-step polyphonic sequencer and arpeggiator.
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Sequential Prophet Rev2
Synthesizer · United States
The Sequential Prophet Rev2, introduced in 2017 as a successor to the Prophet '08, is an analog polyphonic synthesizer available in eight- or sixteen-voice configurations. Each voice uses two digitally controlled analog oscillators (DCOs) and a Curtis analog low-pass filter with switchable two- and four-pole operation, with two layers per program for stacked or split bi-timbral sounds. It is offered as a five-octave Fatar keyboard and a desktop module.
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Sequential Take 5
Synthesizer · United States
The Sequential Take 5, introduced in 2021, is a compact five-voice analog polyphonic synthesizer with two voltage-controlled oscillators and a sub-oscillator per voice and a four-pole resonant analog low-pass filter derived from the Prophet-5 Rev4. Built around a 44-key Fatar keybed, it includes variable-shape oscillators, dual digital effects with overdrive, a 64-step polyphonic sequencer, and an arpeggiator.
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Sequential Prophet-10
Synthesizer · United States
The Sequential Prophet-10 is a ten-voice, bi-timbral analog polyphonic synthesizer reissued in 2020 alongside the Prophet-5 Rev4. It shares the Prophet-5 signal path with two CEM 3340 voltage-controlled oscillators per voice and a switchable four-pole resonant low-pass filter, doubling the voice count to allow layered or split bi-timbral performance. It ships in a five-octave keyboard version and a desktop module.
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Sequential Prophet-6
Synthesizer · United States
The Sequential Prophet-6, introduced in 2015, is a six-voice analog polyphonic synthesizer designed by Dave Smith as a modern descendant of the original Prophet-5. Each voice has two discrete voltage-controlled oscillators plus a sub-oscillator, a four-pole resonant low-pass filter inspired by the Prophet-5 and a two-pole high-pass filter, with a dual analog/digital effects section, polyphonic step sequencer, and arpeggiator.
Categories
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Synthesizers
Hardware synthesizers, synth model families, and related electronic instruments.
Representative model
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Sequential Prophet-5
Synthesizer · United States
The Sequential Prophet-5, released in 1978, was the first fully programmable polyphonic analog synthesizer, letting players store and recall patches. Its five voices, dual oscillators, and warm sound made it a landmark instrument used across pop, film, and electronic music.