The N.E.W. Bass Overdrive is a high-gain bass dirt box inspired by the Boss ODB-3, but with the addition of a switchable frequency mid-control, fixed EQ bypass, clipping selector, and clean blend.
This kit contains all necessary parts, including the pcb: Parts list
Knobs for the pots are not included in the kit, you can select them yourself. The pots have round 6.3mm shafts.
Here´s the build documentation:
GCI Bass Overdrive docs