Erica Black VCO is analogue VCO with four simultaneous waveform outputs and one octave down suboscillator.
The core of the VCO is borrowed from famous Russian synth Polivoks VCO and in exponential converter we use the original matched transistor IC that was used in Polivoks. Unlike harsh logic divider based suboscillators, Black VCO transistor-based suboscillator generates distinct, rounded squarewave. Together with Black VCO Expander – waveform mixer you get massive analogue sound source with plenty of patch points for modular use.
More info @ SHOP!