Erica Synths Polivoks Dual VCA II PCBs, Panel and AS3360 IC
Erica Synths Polivoks Dual VCA II PCBs, Panel and AS3360 IC

Erica Synths Polivoks Dual VCA II PCBs, Panel and AS3360 IC

Your Price:$34.99
In Stock
Part Number:ES-VCA-PCB
Please note: this includes the PCBs, panel and the AS3360 IC only. No other parts are included. Please see the bill of materials link below to source the rest of the parts needed.
Erica Synths DIY Polivoks-inspired VCA is 35mm deep, skiff friendly, has solid mechanical construction and doesn’t require wiring.
The three options include:
  • PCBs: Both PCBs, panel, and the AS3360 IC
  • Full Kit: All components needed for the module, including ICs, knobs, power cable, etc.
  • Assembled Module: Ready to go out of the box!
See the visual BOM for a complete list of the parts included. Please note that we have made some slight changes from the original Erica Synths Github BOM for various reasons.


  • Single or Dual VCA mode
  • CV level adjustment for each VCA
  • Summed audio output (lower signal gain, though)
  • Skiff-friendly design


The Polivoks VCA has a distinctive architecture – two differential opamp-based VCAs in series, each for LFO and ADSR control over signal amplitude independently. Control voltage to attenuation behavior of this VCA is nonlinear and not logarithmic. It is kept authentic to the response of original Polivoks. Most parts of the VCA have been improved to achieve compatibility with eurorack signal and CV standards, higher dynamic range, better reliability, lower noise, accept higher signal levels, keep consistent behavior, self-tuning of two internal offsets and higher linearity, but the heart of it is kept the same. We also redesigned audio signal path, so that you can use it as two independent VCAs or two VCAs in series as in original Polivoks, plus summed signal output.

Technical specifications:

VCA gain1.2
CV level-10V…+10V
Attenuation@0V CV80dB
Panel width8HP
Module depth35mm
Power consumption24mA@+12V, 18mA@-12V

Download the bill of materials with Mouser numbers, the assembly guide and the schematic from the Github page. Use the .zip file, NOT the links to at the bottom of the page!

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