A New MIDI Controller for the iPad, Samson's Carbon 49
The Carbon 49 is a USB MIDI controller designed with the iPad in mind. The MIDI controller has an iPad slot to hold the iPad and it works with almost any iPad synth or music app that supports MIDI. The Carbon 49 can even be powered by the iPad itself for those musicians that need increased mobility and less wiring to worry about. The controller has 49 velocity-sensitive keys, Transpose and Octave buttons, Pitch Bend and Modulation wheels, 14 adjustable performance-related parameters, and a 3-digit, 7-segment LCD screen that displays the controllers behavior.
Since it's a 'USB' MIDI controller, iPad users will also need the iPad Camera Connection Kit to give the iPad a USB slot to hook the Carbon 49 into. The Carbon 49 is selling at various online retailers (like J&R) at $89.99.