The Marshall Jackhammer JH-1 is a versatile overdrive/distortion pedal offering extreme Marshall distortion tones. It can go from overdrive to high-gain distortion. The Contour section allows you to tailor your sound, with controls to scoop out the mids. The Jackhammer offers aggressive gain, but delivers natural and realistic sounds similar to a super high-gain valve amp. Check out other great pedals like the RIOT.
Guitarists found the Contour control offered an amazing range of tones.