Electro Harmonix Germanium 4 Big Muff Pi Effects Pedal

An independent overdrive and distortion each have their own sets of two germanium transistors as well as independent controls. The ability to stack and use both the overdrive and distortion together delivers the power of a four germanium transistor circuit with ultimate control flexibility. Specifications Individual overdrive and distortion with the ability to stack them together 4 individual Germanium Transistors Each mode of drive mode uses its own 2 germanium stack Overdrive and distortion can be stacked utilizing four germanium transistors Bias and tone control define the tonality in overdrive Volts and Bias define the way the distortion will react Starving battery sound through volts control adds character Battery equipped with optional 9.6DC-200 power supply Dimensions in inches: 4.75 (w) x 5.75 (l) x 2.5 (h) Dimensions in mm: 146 (w) x 121 (l) x 64 (h)