Fun with new Expressor VCF Prototype

“Expressor“ is deeply modified by the filter of the most famous Soviet synthesizer “Polivoks“. Unlike the ancestor, “Expressor“ is a complete state variable filter with Low-Pass, Band-Pass and Hi-Pass modes, which can be extremely overloaded or driven into self oscillation. On board there is a voltage controlled low-frequency oscillator, the waveform of which is infinitely variable from ramp to triangle to sawtooth, or rectangular with variable width, similar to the way it is implemented in “Korg MS-20“.