With the boost disengaged, the T-Rex Mudhoney Distortion Pedal gives a mild to fierce boost, depending on gain setting that re-creates the guitar sounds of the psychedelic 60s. With the boost engaged, it is capable of unleashing the most in-your-face fuzz mania by adding a subharmonic beneath the selected fuzz setting. Great for alt rock. Unlike most distortions, Mudhoney is able to maintain a tight bottom end, even in the most extreme settings. The volume is unity gain in the 12 o'clock position and provides up to 3dB of boost.