Not Okay is a MOSFET Boost DIY project, the board can be soldered directly to a 3pdt footswitch. It can be built as a standalone pedal, or used in place of the 3PDT utility board together with another circuit as an additional amplifier stage.
This kit contains all necessary parts, including pcb: Parts list
Knob for the pot is not included in the kit, you can select it yourself. The pot has a round 6.3mm shaft.
Here´s the build documentation:
Not Okay docs