Built from the ground up with the best available components, the GT Overdrive pedal creates smooth, warm and classic overdrive without excess noise or tone colouring. Simple controls make it easy to dial in great tone quickly - crunchy rhythm tone with chord clarity - to sparkly and harmonic rich lead tones with tons of sustain. You won't find an overdrive that's more organic, responsive or open sounding. Hardwire bypass. Powered by 9 volt battery or AC adaptor (ECB003).