ESQ-1
From the Community
From the community
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Document Library
Manuals
1Service & Technical
1Utilities & Downloads
Ensoniq ESQ-1 OS v1.7
1.7This is a collection of firmwares for vintage synths and midi equipment. Source: archive.org item vintage-synth-firmware-collection.
Ensoniq ESQ-1 OS v2.2
2.2This is a collection of firmwares for vintage synths and midi equipment. Source: archive.org item vintage-synth-firmware-collection.
Ensoniq ESQ-1 OS v3.5
3.5This is a collection of firmwares for vintage synths and midi equipment. Source: archive.org item vintage-synth-firmware-collection.
Audio Demos
Compatible Sound ROMs
EPROM Archive
Parts & Components
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Modifications
Owner Registry
Production figures for the ESQ-1 were never widely published, so there’s no official record of how many were built — or how many survive. This registry is a community census: every owner who logs their unit makes it the closest thing there is to a real count.
Serial number, condition, and configuration are aggregated anonymously into the census.
System Components
Manufacturer
Ensoniq
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Specifications
- midi
- MIDI
- filter
- 1 analog resonant low-pass per voice
- memory
- 40 patches internal, 80 extra with an expansion card
- effects
- None
- keyboard
- 61 keys, velocity sensitive
- polyphony
- 8 voices, 3 oscillators each (24 total)
- synthesis
- subtractive, 8-bit digital PCM and single-cycle wavetable-lookup
- multitimbral
- 9
- production years
- 1986 - 1988
