Description
The George Dennis Wah-Overdrive pedal works as either a Wah-Wah-pedal, or as an Overdrive pedal. In the Wah-Wah mode, the pedal works by applying a high-gain band-pass filter to the signal, the resonant frequency of the filter being controlled by the position of the pedal. Rocking the pedal back and forth produces the distinctive Wah-Wah effect. Int the overdrive mode, the level of overdrive is now controlled by the position of the pedal.