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Mousse

DesktopHybridDuophonic

Imagine a groovebox where a single sine wave gets twisted through audio-rate chorus to mimic FM tones, sitting right next to a classic subtractive voice churning out waveforms and noise—all in a compact desktop unit that patches like a mini modular.

This hybrid synth packs two distinct voices: Voice A shapes digital sine waves via time manipulation and chorus for metallic, OP FM-like timbres, while Voice B delivers multi-waveform subtractive synthesis with mod, feedback, and noise controls. Both route through resonant multimode filters (lowpass, highpass, bandpass) and VCAs, fueled by two decay-only envelopes with curve inversion for ramps, plus two intricate LFOs that cross-patch for wild modulations. The real magic lies in the dual four-step sequencers—sharing a CV-controllable clock with internal/external sync—offering slewing, rotation, step skip, semi-random modes, and four gate outputs each, turning it duophonic with generative rhythms via 40 patch points using Eurorack cables. Housed in a sturdy powder-coated metal box (310x200x60mm, 2kg) with an intuitive knob-and-jack panel distinguished by white-circle inputs, it includes separate 1/4" outs for each voice, a mix out, headphone jack, and runs on a standard 9V center-negative pedal supply.

Since its 2021 debut, players praise its clever groove-making depth and tuned resonance for wonky basslines and experimental beats, though some note early tuning challenges in low ranges and wish for clock reset buttons—overall, it's earned a spot as a unique hybrid in the semi-modular scene for inspiring patches without overwhelming complexity.

Released

2021

Status

In Production

Synthesizer
Format
Desktop, Semi-Modular
Type
Hybrid, Subtractive, Other
Internal Battery
No
Voice
A/D
Hybrid
Polyphony
Duophonic
Oscillators
1
Oscillator Type
Digital
Voices
2
Tracks
2
Filter
Lowpass, Highpass, Bandpass, Multimode, Resonant
Envelopes
2
LFO
2
Effects
No
Expression
Aftertouch
No
Velocity
No
MPE
No
Additional
dual-voice, CV sequencers, generative capabilities
Software
-
I/O
Audio In
Multiple CV inputs (40 patch points)
Audio Out
3x 1/4" mono
Headphone
1
MIDI
-
MIDI Type
-
Ports
CV/Gate, Clock In, Clock Out
Wi-Fi
No
Workflow
Arpeggiator
No
Sequencer
Yes
Mod Matrix
No
Memory
No
Measurements
Dimensions
310 x 200 x 60 mm
Weight
2 kg
Last updated Feb 26, 2026