Available as an assembled Module and as a DIY project.
This Module is currently available.
Knobsl Modular
Filter fish is a dirty Lo-Fi filter, there’s no option to get a clean output, but it’s a world class resonator.
It has a low distortion option with the resonance path mostly off through the toggle switch,
and a thundering resonance with all knobs and switches on.
All knobs and switches do change sound and interact with each other to some degree.
