This is the most aggressive distortion pedal BOSS has ever built - for the hardcore metal fan base! Most extreme distortion with biting attack for the hardest riff work! Where brutal sounds are required, the ML-2 Metal Core is the right weapon: Death Metal, Industrial, Grind Core, Extreme Metal, etc. The depth control of the LOW control ensures extreme bass, even for 7-string guitars and drop tunings, the HIGH control can provide cutting, metallic highs. Ultra fierce!