VCO – Analog Voltage Controlled Oscillator

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Meet the VCO, the latest in our line of Buchla-esque Eurorack modules with LED sliders instead of typical potentiometers.

The VCO is an analog voltage controlled oscillator with a wide frequency range and 8 trackable octaves. It uses the Curtis CEM3340 reissue chip, which is famous for its outstanding sound quality.


  • Simultaneously available triangle, saw and square wave outputs
  • Frequency range: 5Hz to 28kHz
  • Frequency Modulation (FM) input and attenuation control
  • Pulse Width Modulation (PWM) input and attenuation control
  • 1 V/o input, tracks 8 octaves


  • Width: 4HP
  • Depth: 53mm
  • Power draw:
    • +12V: 42mA
    • -12V: 31mA

Includes power cable and module screws.


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