100% Analoge oscillator met nauwkeurige tracking over 8 octaven, Supersaw wave vorm met interne modulator en suboscillator.

Erica Synths Black VCO expander is an expander module for modular synthesizers in Eurorack format. It can only be used in combination with the Erica Synths Black VCO v2. The module is a waveform mixer and simultaneously extends the range of the suboscillator from one octave to two octaves below the VCO.