DIY Polivoks VCA II

Polivoks dual VCA kit on the original K118UD1 opamps

Erica Synths · 8 HP · 3U

Panel · 40.6 × 128.5 mm

Description

Erica Synths' DIY Polivoks VCA II, a retired kit: the Polivoks synthesizer's distinctive VCA, two differential opamp VCAs on the original Russian ICs, its nonlinear response kept authentic, improved for Eurorack levels, dynamic range and noise. Two independent VCAs, or two in series as in the original Polivoks, with a summed output.

Key features

  • Single (two VCAs in series) or dual VCA mode
  • CV level adjustment for each VCA, which also sets its bias
  • CV inputs -10 to +10 V; 80 dB attenuation at 0 V
  • Summed MIX OUT (at a lower level)
  • +24 mA, -18 mA, 35 mm deep, skiff friendly

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