The Nektar NX-P Universal Expression Pedal is the perfect match for Nektar's Pacer foot controller and anything else with an expression pedal input for that matter. The NX-P features a polarity switch, which makes it compatible with virtually any piece of gear with an expression input. We're big fans of Nektar's music production tools here at Sweetwater, and the Nektar NX-P adds universal expression control to the lineup.