The Carl Martin Crush Zone is a vintage style, high-gain/distortion pedal using the same high quality components as its Carl Martin cousins. The Crush Zone provides everything from a slight edge to your tone to mind-blowing distortion. Adjust the cool chicken-head knobs for level and distortion, and then refine your sound using the tone control. Crush Zone is housed in a heavy die-cast case with 9-volt battery compartment and heavy-duty bypass switch.