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CMU-800 - Image 1

CMU-800

DesktopAnalogPolyphonic

Back in 1983, this wedge-shaped pioneer was one of the first sound modules to blend computer sequencing with multitimbral analog synthesis, letting you control external synths via CV/Gate while running sequences from an Apple II or similar vintage computer.

It's a compact desktop unit packing a monophonic lead synth, monophonic bass line, four-voice poly chord section, and seven analog drum voices, all with fixed but tweakable sounds reminiscent of Roland's early SH-series grit—think crude envelopes, basic sustain/release, and a nine-octave range on the synths. A built-in four-channel mixer handles independent outputs for each section, with a ribbon cable connecting to the computer's interface card for software-driven sequencing, clock sync, and up to eight CV/Gate pairs on the rear to drive external monosynths. No MIDI natively, but its hybrid analog heart and Sync24 compatibility via add-ons made it a forward-thinking hub in Roland's early digital-analog experiments.

Collectors cherish its rarity and historical edge as a multitimbral trailblazer, though working units are scarce due to separated cards and floppies—sounds raw and simple, perfect for that authentic '80s computer-music vibe if you can fire it up.

Released

1983

Status

Discontinued

Synthesizer
Format
Desktop
Type
Subtractive
Internal Battery
No
Voice
A/D
Analog
Polyphony
Polyphonic
Oscillators
-
Oscillator Type
-
Voices
4
Filter
No
Envelopes
-
LFO
-
Effects
No
Expression
Aftertouch
No
Velocity
-
MPE
No
Additional
-
Software
-
I/O
Audio In
-
Audio Out
Mix, Melody, Bass, Chord, Rhythm
Headphone
-
MIDI
-
MIDI Type
-
Ports
CV/Gate, Clock In, Clock Out
Wi-Fi
No
Workflow
Arpeggiator
-
Sequencer
Yes
Mod Matrix
-
Memory
None
Measurements
Dimensions
-
Weight
-
Last updated Mar 21, 2026