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SDS_VCO

EurorackDigitalMonophonic

Imagine squeezing a full-featured oscillator, envelope, VCA, and quantizer into just 3HP— that's the clever engineering behind this digital powerhouse, perfect for tight Eurorack builds where every millimeter counts.

At its core, it delivers 16 selectable waveforms from crisp sine and triangle to sawtooths, PWM pulse, noise, and three custom ones you draw with the knobs or even record directly. The built-in envelope generator offers attack, decay/sustain, and release shaping straight to an analog VCA, with a dimmable VU meter for easy level checks and a mono audio out at up to 10Vpp. Pitch tracks 1V/oct over 5 octaves from A-2 at 0V, with a quantizer featuring 16 scales, root key offset, and +1 octave switch; the versatile MOD input handles waveform selection, pulse width or phase modulation (-5V to +5V range), envelope tweaks, or even velocity for the optional $20 CV-to-MIDI board that syncs notes across 8 channels. All settings and custom waves save on power-up for instant recall.

Modular folks love its patch-friendly density and smooth continuous modulation recording, which keeps things flowing even as you switch functions—though some note the digital character shines brightest in mixed-signal rigs rather than all-analog purist setups.

Released

2017

Status

In Production

Synthesizer
Format
Eurorack
Type
Digital
Internal Battery
No
Voice
A/D
Digital
Polyphony
Monophonic
Oscillators
1
Oscillator Type
Digital
Voices
1
Filter
No
Envelopes
1
LFO
-
Effects
No
Expression
Aftertouch
No
Velocity
No
MPE
No
Additional
16 waveforms, quantizer, VU meter
Software
-
I/O
Audio In
-
Audio Out
1x 3.5mm mono
Headphone
0
MIDI
-
MIDI Type
-
Ports
CV/Gate, Trigger In
Wi-Fi
No
Workflow
Arpeggiator
No
Sequencer
No
Mod Matrix
No
Memory
Yes
Measurements
Dimensions
3 HP
Weight
-
Last updated Mar 21, 2026