Morley
Power Wah Boost
Type : Filter
Debut: 1973
Morley broke with the wah pack by introducing a model that used a photo resistor in place of the standard potentiometer. The PWB doubled as a volume pedal, and it also featured a footswitchable, variable boost function. With its wide, smooth sweep and quiet operation, the PWB was a revolutionary design that opened the door for a slew of ever more elaborate Morley pedals.