Wanna add a little more to a whole fucking lot!
This PCB will let you build a clone of the audio monstrosity that is the Armageddon by Death By Audio.
This result of Oliver Ackermanns search for the perfect fuzz is basically a first generation 7-transistor fuzz war with a footswitch to switch between 2 different filters and a switch to determine how much bass you want your pedal to handle.
A version of this circuit is in that huge metal box that almost never leaves Ackermanns board so if you are into A Place To Bury Strangers (wich you should be) this is the circuit for you!
You can also get this as a kit from Musiking here