The new `single channel` Carl Martin PlexiTone Lo-gain pedal was designed in association with Pete Thorn, and is housed in a small pedal-board friendly housing with 3 knobs and 1 switch. Apart from Pete's slight modifications that give this new pedal a tighter bottom-end and slightly softer high frequencies, it is exactly the same gain structure as the High Gain setting on the original Pro Series PlexiTone....it just plays better with different amps. The single Plexi Lo-gain 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 PlexiTone. This allows us to use the same high quality components which provide the same tone and headroom that make the CM Pro-Series stand out from the rest! room that make the CM Pro-Series stand out from the rest! - The Level knob adjusts the overall level. By adjusting this knob (in conjunction with the gain) you can match or exceed the bypass signal for rhythm or solo work. - The Drive knob adjusts the amount of overdrive, from light crunch; at full counter-clockwise, to full, fat overdrive with loads of sustain at full clockwise. - The Tone knob is a high cut filter. With the knob set at full clockwise, you enjoy the full bandwidth of frequencies, so as you turn the knob counter clockwise, you start to filter.