The Twin Carb combines our acclaimed Drive Thru overdrive with our Crank Starter clean boost in a single enclosure. Both circuits are fully independant and can be used individually or together. The Twin Carb is a multi-function pedal that takes up no more space on your pedal board than a regular BB box. Think of it as two pedals in one or explore the wider gain range on offer by using the overdrive circuit to push the boost circuit into a fat creamy distortion with fantastic sustain.