FuzzDog Naughty Monkey is a Tube-Screamer style pedal with a two-band EQ. It features a wide range of gain, from a subtle boost to a thick, saturated overdrive. The HI knob controls the amount of high-end boost, while the LO knob controls the amount of low-end boost. The pedal also has a toggle switch that allows you to select between two different clipping modes: symmetrical and asymmetrical.

In symmetrical clipping mode, the pedal produces a more compressed, saturated sound. In asymmetrical clipping mode, the pedal produces a more open, dynamic sound. The pedal is also true bypass, which means that when it is turned off, your signal will pass through it unaffected.