This is the Early version of the SOB filter

This module is no longer available and was produced in very limited quantities .
It includes a VCA, 2 CV inputs, 2 signal inputs, a wave folder, Vactrol input along with attenuator, 1v per octave and a buffered output, cutoff and resonance knobs, High pass, low pass, band pass and band reject filter outputs (simultaneous) Filter slope is 12 db per octave and have very strong resonance .