Available as an assembled Module and as a DIY project.
This Module is currently available.
AS3320-based 24dB 4-pole Low Pass Filter
This is a 24dB resonating low pass filter based on the AS3320, a clone of the CEM3320.
It is capable of self oscillating, and has modulated CV input for both Cutoff and Peak.
Input, Outputs and Controls:
OUTPUT: Audio Output
C: Filter Cutoff
P: Filter Peak (resonance), self-oscillating at highest setting.
CUTOFF: Cutoff CV Input
PEAK: Peak CV Input
CM: Cutoff CV modulation