OUT OF PRODUCTION! New version is on the way!

Unique design VCO with built in waveshape mixer, transistor-based sub-oscillator and detune function for +-2 semitones.

The Erica Black Varishape VCO design inspiration came from Polivoks VCO. We were so excited about new ideas that came from the engineering process, that we ended up with something much more advanced. It has solid tracking over 9 octaves, internal mixer to mix direct and inverted waveforms giving you broad range of waveforms. If PWM signal is applied, you get an advanced waveshaper. Also, our pride and joy, a transistor based suboscillator to fatten the sound!
Varishape VCO comes in two versions: VCO1 is with XMOD function, which is intended for audio rate frequency modulation and VCO2 – with detune +-2 semitones.


  • Triangle, Saw, Pulse and invert Triangle, Saw, Pulse waveforms
  • Built in waveform mixer
  • CV controlled waveshaper (via PWM controll)
  • Transistor based suboscillator
  • PWM adjustment via potentiometer and external CV
  • 7-octave range switch
  • Great ttracking along 9 octaves
  • 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.


Price: 265EUR
+ 21% VAT for individual customers in EU without EU VAT registration number + shipping 


Technical specifications:

CV Input signal level

-10V – +10V

Output signal level

up to 20V ptp

Frequency range

20Hz – 28kHz

Power consumption

+50mA, -45mA

Module width


Module depth



Erica Black Varishape VCO on Modulargrid


Demo by Ben_Hex