Optocore Vactrol Filter & VCA Teia Synthesizers eurorack

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Shipped From
Teia Synthesizers
oeiras, Portugal
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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.
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