The Cat Tail is a low to high gain distortion with overdrive capabilities (some even say at high gain settings, it sounds like a fuzz ).This circuit is based on a well-loved, classic distortion that make a clean amp dirty and a dirty amp disgusting. With a tweaked original circuit to better meet the needs of guitarists and bassists alike. PLEASE NOTE: This is in fact the pedal known formerly known as 'Rat Tail.' The name was changed in July 2015 to avoid product confusion. The circuit remained the same.