The Electro-Harmonix Micro Metal Muff Distortion Pedal is everything you love about the classic Metal Muff in a small, die-cast aluminum package with simplified controls. 15db boost and cut around a carefully selected mid frequency guarantees huge scoop possibilities. Selectable top boost ranges. 9V DC power jack, small and compact so it won"t take up valuable space on your pedalboard. The Micro Metal Muff provides an awesome array of alloys ranging from slithering mercury to molten slag, lead belly to blast furnace dross. Push your pedal to the metal.Volume, tone, and distortion knobs Top boost switch Effect on/off footswitch with red LED indicator