The Marshall JH-1 Jackhammer is a downright gnarly distortion pedal aimed at players looking for crushing high-gain metal tones. With an absurd amount of gain on tap and a sweepable Contour control for scooping and shaping the midrange, the JH-1 gets into Master Volume Marshall amp distortion territory and then takes it a couple steps further. But the Jackhammer's no one trick pony. Flip the Mode switch over to "OD" for dynamic overdrive and crunch sounds that most high-gain dirt boxes can't touch. Dual-concentric pots allow for a total of seven controls on this compact, sturdy pedal, saving precious space on your board.