Black Polivoks VCF


1 in stock

SKU: erica_.Blck Polivoks VCF Maker:


Authentic emulation of famous Soviet Polivoks synth VCF circuit with extended cutoff knob and eliminated clicks.

This is one of the most authentic sounding emulations of the famous Soviet synth, the Formanta Radio Factory Polivoks.
The original Russian ICs K140UD12 are used in the sound circuit. We did several updates to adapt the VCF for contemporary modular synth demands. Independently buffered inputs, extended Cutoff knob, eliminated clicks, when switching filter modes, and output stage added to eliminate signal inversion. The result is a much punchier bass sound and very smooth controls.


  • Switchable BP/LP modes
  • Inputs/outputs are protected against over-voltage
  • Diode protection on reversed power supply

Erica Black series are high-end modules with unique functionality. Only the highest quality components are used and all inputs and outputs are protected against undesired overvoltage. When designing the Black Series, we did not economise on the module width, we put design and usability first. Big knobs are assigned to functions that make difference in sound. The Erica Black series are a range of modules that together make an entire synthesizer.

Technical specifications:

Input level up to 20Vptp
CV Input signal level -10V – +10V
Filter modes BP(6dB/oct)/LP(12dB/oct)
Power consumption +11mA, -11mA
Module width 12HP
Module depth 25mm


Erica Black Polivoks VCF on Modulargrid

User manual