Electro Harmonix Nano Metal Muff DistortionThe EHX Nano Metal Muff was built for the player who demands nothing less than hard hitting distortion and an intense, aggressive sound. Its a combination of weaponized distortion and an extremely powerful EQ section that provides all the flexibility and tone shaping needed to dial in an array of ultra heavy sounds. The Nano Metal Muffs newly designed noise gate is a superb addition to this high gain pedal and eliminates unwanted hum when you stop