This is yet another Electro- Harmonix pedal specifically designed for bass and another positive addition to its range. Expect the usual robust construction and discover the most adjustable envelope shaper ever packed into a stompbox. No less than eight rotary controls that essentially work in pairs to alter the mode of the effect, the response time, duration, filter sweep and also include the Q control. For even more sound options theres the switchable analogue distortion. Separate sockets are provided for dry and effects plus connection for an optional expression pedal.