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Electro-Harmonix Germanium 4 Big Muff Pi Distortion/ Overdrive Pedal

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Electro-Harmonix Germanium 4 Big Muff Pi Distortion/ Overdrive Pedal

Take charge of your distortion and overdrive tones with the EHX Germanium 4 Big Muff Pi guitar pedal. Stack up to four germanium transistors to shape classic Big Muff Pi tones from subtle overdrive to full-blast fuzz. Combine that with tone, bias and voltage controls for both channels to enjoy a wide range of tonal freedom.


  • Four individual Germanium transistors

  • Each mode of drive mode uses its own two-germanium stack

  • Overdrive and distortion can be stacked utilizing four germanium transistors

  • Bias and tone control define the tonality in overdrive

  • Starving battery sound through volts control adds character

  • Battery equipped with optional 9.6DC-200 power supply

  • Dimensions in mm: 146 (w) x 121 (l) x 64 (h)