X-1 Filter Eurorack Module

This 4HP Eurorack module is the first of a series of experimental VCFs that we will be releasing. It is a 1-pole, vactrol-based, totally analog low pass filter with resonance. There is a knob and CV input to adjust the cutoff frequency and a knob to bring in the resonance. This is a self-resonating filter, so it can also be used as an oscillator.