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Electro Harmonix Metal Muff Distortion with Top Boost Guitar Effects Pedal

High input impedance buffered bypass
Output volume and master drive controls
3-Band EQ bass mid and treble
Foot switchable Top Boost with separate control knob
9-volt battery included Optional 96DC-200BI power supply available
Knob controls include Distortion Bass Midrange Treble Top Boost and Output volume