Schippmann CS-8 VCF-02 Multi Filter Eurorack Module SN 671322

via this auction

All-in-one filter with 121 different filter types

27 Low-pass, 18 High-pass, 13 Band-pass and 63 all-pass/notch/phase-type filters

5 LED buttons for Filter Type Selection with 3 states: Off, Green, Red. Different combinations used to select type of filter.

2 Input with Phase Reverse Switches with Drive LED

Control of Resonance, Frequency, Emphasis, Drop (in low pass only) with CV inputs

2nd Harmonic function - adds soft harmonic distortion (warm coloration), increasing at higher levels