Pure VCO

Pure VCO


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The GMSN! Pure VCO is a classic analogue sound source.

It has saw, triangle and pulse outs, with coarse and fine control of the frequency across the whole audio range right down to LFO frequencies.

The pulse width can be set from 0 – 100% with 50% being square wave out.

There is also 1 volt per octave CV In, FM In with control of the level, PWM in, again with control of the level and an Audio Sync In.

Open Source Documentation
Eagle Docs & Bill of Materials: Pure VCO Latest
Cadlab.io Schematic: Pure VCO.sch
Cadlab.io PCB: Pure VCO.brd
Further build documentation and guidance is provided to GMSN! Supporters via the forum. Please buy direct from GMSN! to create a forum account.

Additional information






40mA -12V, 41mA +12V

Frequency Range

12Hz – 56kHz