Make me an offer on this early 70s Big Muff. No power supply. But we tested this a guitar center and it does bypass the signal, but when you engage the pedal no sound. If you know how to fix it I’m sure it’s a simple fix. Local pick up also l in Atlanta Ga.

Description: Vintage Electro-Harmonix Big Muff Pi fuzz pedal has a silver and black metal enclosure with red graphics. This unit has three control knobs for volume, tone, and sustain. The top panel includes a power switch and audio jacks. The exterior has significant scratching and cosmetic wear. The back and sides have a textured black finish.