Here is a brand new REDesign π Fuzz pedal. As the name suggests, the circuit is based on the Big Muff Pi. I chose to use the triangle version of the Big Muff as a starting point and incorporate a few changes. I always felt the tone control could be improved, so I added an additional Mid control so you can go from scooped to boosted mids at the twist of a knob.
It runs on a standard Boss-style 9 volt adapter jack, no battery.