Anyway this is bassed on the classic Russian muff with many mods and super bright LED. Runs on standard boss 9volt power.
This is his description of all those tone shaping options
" I made a beast of a muff last night. It has all features that are for us bass folk. Switch in side cuts a set of clipping diodes for a different flavor of muff. Top row is the stock controls. Volume, tone, sustain. Next row is the mods wet dry blender, mids (all the way left gets the really scooped sound) and depth for as much bass as a muff can let out. I socketed the transistors so in the future if you get scientist you can experiment with different NPN style transistors. I put 2n5088s in it now with a mpsa18 in the first transistor position to get the most volume boost out of it. Other options if you order them off eBay or small bear ever are 2n2222 lower gain all mpsa18 slammed gain might be too much, 2n5089 lower output can be farty"