The Carl Martin Crunch Drive is a 9V-battery-powered overdrive pedal designed to emulate the crunchy blues tone of a tube amp. It features Attack (mid) and Edge (treble) controls for a variety of distortion flavors. This true bypass pedal offers crisp and lively tones ideal for jangly chords and light blues soloing. Handmade in Denmark, the Crunch Drive provides dynamic crunch with versatile gain, attack, and level controls, similar to a Marshall BluesBreaker.