Distortion pedals are a type of effects unit designed to add distortion to an audio signal to create a warm, gritty, or fuzzy character. Depending on the style of signal clipping, the broader category of distortion pedals is typically divided into fuzz pedals, distortion pedals, and overdrive pedals. Designed for electric guitar and bass and operated by the player's foot, distortion pedals are most frequently placed in the signal chain between the guitar and amplifier.