So my dad has been playing since he was 15, he has many guitars, amps, and pedals. I found his old Meastro Boomer2 (
wah pedal) its in great condition, but the battery supply is an old battery type that i dont even know what it is. maybe pre 9-volt style. Im thinking of changing the power supply to a 9 volt, or even a outlet supply. Any help on how to do this, or if there is any kits to do this ...