Available as an assembled Module and as a DIY project.
This Module is discontinued.
Dual Low Pass Filter
Dual second order low pass filter
Input 1 normalled to input 2
Individual outputs, mixed output, and vs output which compares the outputs.
CV in for cutoff and resonance on each, and cv inputs for cutoff and res on both.
Switch affects the behavior of the large center knob and the "both" cv inputs, up for parallel motion, down for inverse motion (spread).
https://www.groundgrowncircuits.com/
https://github.com/GroundGrown