Guitar effect pedal overdrive/distortion. The MXR Sugar Drive provides a diverse range of clear and transparent overdrive tones, from sauced up boosting to blown-tube distortion. It’s based on a rare overdrive pedal that has acquired a mythical reputation among fanatical tone-seekers thanks to its unique circuit design. The key elements of that circuit design are the Drive control and something called a voltage doubler. First, the Drive control on this pedal doesn’t just increase the intensity of the overdrive pedal. It starts with your clean signal and then blends it with the overdrive effect as you turn it up, replicating the smooth transition of an amplifier going from clean to dirty. The voltage doubler increases overall headroom, which opens everything up nicely.