This Pedal is discontinued.
Tube Overdrive
Overdrive must be sensitive to quick response and picking strength. The CM-2 offers these in two modes of operation, adding a new dimension to your tone.
It's also handy when you want to add a subtle gain to a clean sound, or when you want to boost the gain of a tube amp.
The classic and modify mode selector switch allows you to create everything from classic overdrive to fat high gain sounds. In addition, it is equipped with high and low tone controls that widen the range of distortion.
http://www.digitechjapan.jp/hardwirepedals/cm2-tube-overdrive-overview.php