#1
Does anyone know how to modify a Russian Big Muff to take a 9v adapter?

Thanks.
Guitars:
Martin DSR acoustic
Fender Telecaster
Epiphone Les Paul
Amp:
Fender Hot Rod Deluxe
Pedals:
535Q Crybaby>Fulltone OCD>Phase 90>EHX Big Muff>MXR Carbon Copy>EHX Holy Grail
You can call me Matt