The Carl Martin AC Tone is a single channel version of it's big sister, the Pro Series AC-Tone. Carl has kept the same tone but beefed up the overdrive, and added a very useful Cut control, which acts like a low-pass filter and helps control those high end frequencies. In a pedalboard friendly size, and without compromising part quality or tones, the simple Level and Drive controls give you everything from those famous chimy cleans to full out British rock in the style of...well you know what. The single AC-Tone also incorporates our new DC-DC converter circuitry, so the pedal can be powered by a regulated 9V Power Supply but will still operate on the same +-12V level as the original AC powered AC-Tone. This allows us to use the same high quality components which provide the same tone and headroom that make the CM Pro-Series pedals stand out from the rest!