The pitbull of distortion boxes.

The Electro-Harmonix Metal Muff with Top Boost features 3 powerful EQ bands that are ideal for sculpting mids and a total of 6 controls for shaping sound precisely your way. Top Boost adds serious bite with its own control knob and footswitch button.

Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal Specifications:

• DISTORTION CONTROL — adjusts the amount of input gain.

Electro-Harmonix XO Metal Muff with Top Boost Distortion Guitar Effects Pedal Features:

• Volume, Top Boost, Treble, Mid, Bass, and Distortion knobs
• Boost and bypass footswitches