The Electro Harmonix METAL MUFF is the ultimate metal distortion pedal. Three powerful EQ bands sculpt the mids and 6 controls shape the sound precisely for your groove from slithering mercury to lead belly blast furnace dross. Its unique Top Boost adds serious bite with its own control knob so you can kick it on for searing leads.
The electro-harmonix Metal Muff with Top Boost is aimed directly at our metal-loving guitarists, and may just be the finest pedal for heavy metal ever created!
3-band EQ
Top Boost for solos and lead passages
Sculptable mid-range for classic metal tones
Separate footswitches for Bypass and Boost
https://www.youtube.com/watch?feature=player_embedded&v=OEPWQhWLqRc