The MXR Wylde Phase guitar pedal adds buoyant shimmer to your chord work and infuses your single note runs with jet engine velocity. Not just for guitar, the Wylde Phase also does very nice things for bass, keyboards, and vocals. From a slow swirl to a pulsating jackhammer, one knob ("Rate") does it all. MXR has designed the Wylde Phase to Zakk Wylde"s personal specs, so if you dig his sound - or just want an excellent phase pedal - take a walk on the wylde side with the MXR Wylde Phase.