Make your own dynamic bass envelope filter, very similar to a Bass Balls™. Kind of an autowah affair. There's a knob for sensitivity and a toggle switch to kick in some distortion.
One of the internal trimmers can be replaced with an external pot if you want more tweakability over the filter instead of set-and-forget.
Distortion switch is board mounted for minimal wiring and easy enclosure mounting.
Partial kit: PCB, all board-mounted components, pots.
Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.
Enclosure (pre-drilled) is only available with full kits, and will not take a battery. Knobs are not included.
PCB size: 50 x 50mm
Knobs required: 1, 2
Download INSTRUCTION PDF