Classic dual overdrive effect pedal for electric guitar that combines sound of two original 1969 plug-in Muff Buzz pedals. Use just one for a hint of milky distortion, or cascade the second one for over-the-top overdrive that turns the milk into cream. Pedal provides dedicated control for each Muff and a Signle/Double switch, and is true bypass. It can be powered by a 9B battery (included) or an optional power supply. Dimensions: 70 x 115 x 54 mm.