OptoCore Vactrol Filter & VCA

The Optocore is a combination of a 12dB multi-mode Vactrol Filter and a Vactrol Voltage Controlled Amplifier. It is a completely original circuit inspired by the singular nature of Vactrols and their fluid and natural character.


Vatrol based 12dB multi-mode Voltage Controlled Filter: Lowpass, Bandpass and Highpass.
Vactrol Based Voltage Controlled Amplifier.
Crossfade between VCF and VCA section.
Voltage controlled Resonance.
Ping Input for percussive sounds generation.
Cutoff Frequency polarity inversion switch. Doesn’t change VCA polarity
Overdrive and Feedback controls.
Attenuator/inverter knobs on all voltage controlled inputs
Touch control over Frequency and Amplitude.


  • 55 mA +12V
  • 55 mA -12V
  • 0 mA 5V
  • 33 mm deep

This Module is currently available.

$238 Price in € submitted Dec 10th 2020, 21:11 by dlc | last Change Dec 10th 2020, 21:14 by dlc

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