Hammond V-20RT Speed Control PedalThere's no substitute for a real Leslie cabinet, and you'll have total control of yours with a Hammond Organ V 20RT speed control pedal. Designed for use with the Hammond G37, 27, and Studio12 cabinets, you'll have real time variable control of how quick of an effect you desire. There's nothing like playing through the real thing. So when you're setting up your Leslie cab, make sure you're in command of it with the Hammond V 20RT speed control pedal.