The original Dwarfcraft Device!  and still a superstar! 3 squarewave oscillators a-bumpin-and-a-grindin to your hearts content.  With an independent mix knob for each little voice on board.  It’ll sing, it’ll scream, it’ll fight with itself.  You don’t play it, you play with it.

This pedal also allows you to make the WRONG CHOICE and use a 9v battery, if you’re into that.