StudioLogic VP-27 Expression & Volume PedalThe StudioLogic VP 27 is a pedal that gives you continuously variable control over volume and expression functions. Boasting a slip proof surface and a 10 kOhm pot, the pedal offers a single 1 4" TRS connector on a 6. 6' cable. It was designed to work with the StudioLogic SL88 Grand, SL88 Studio, and SL73 keyboards, but it also works with many other StudioLogic products, as outlined below. It may work with the inputs of other manufacturer's