Polivoks VCF is famous for its’ crazy resonance sweeps and deep, bassy sound which makes it ideal for acid basslines.

We believe, this is one of most is one of most authentic sounding famous Russian synth Polivoks VCF emulations available. 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 range, eliminated clicks, when switching filter modes, and output stage added to eliminate signal inversion. 


  • Switchable BP/LP modes
  • Inputs/outputs are protected against over-voltage
  • Protection on reversed power supply
  • Skiff friendly design


  • PCB + 2xK140UD12 ICs= 28EUR
  • PCB + 2xK140UD12 ICs + panel= 43EUR
  • Full kit = 80EUR

+ 21% VAT for individual customers in EU without EU VAT registration number + shipping


Erica Synths DIY Polivoks VCF on Modulargrid


Technical specifications:

Input level

up to 20Vptp

CV input level

-10V - +10V

Filter modes


Module width


Module depth


Power consumption 

11mA@+12V, 11mA@-12V


Disclaimer: please, if you have any questions on missing parts or similar issues, contact us within 1 months after receiving the kit!