The Shigeharu is Caroline's offering to the fuzz world. It is a Muff-style fuzz with an internal bias trimpot, octave up capabilities, and extra tonal flexibility with the addition of a tone control, and a body control - which controls bass and midrange shape. This fuzz can put out an equally articulate range of light breakup to sonic debauchery. Out of the box, the 'havoc' switch is momentary, and activates the octave up mode. In the pedal, you can set the octave up as always on, and the havoc switch acts as a killswitch. The Shigeharu is perfect for scaring neighbors and making them your new best friends at the same time.