The Whammy 4 delivers the same incredible effects and functions that made the original a must have for guitarists. You get the same natural-whammy effects, gripping pitch bends and lightning harmony shifts. But they've been updated and enhanced, offering you a fullness and depth that will take your sound to the next level and beyond. A MIDI-In jack has been added for those that need it; you can hook up to any MIDI controlling device and gain remote control over the Whammy.