Line 6 is showing its Mobile Keys premium keyboard controller for the Mac, PC, iPad and iPhone at the ongoing Winter NAMM 2012.

Mobile Keys 25 and Mobile Keys 49 are a pair of new, lightweight, aportable keyboards designed to control iOS music apps and do double duty as USB MIDI controllers for Mac and Windows computers. Both models have full-size keys, which are velocity sensitive, allowing them to interpret the nuances and subtleties of a keyboardist’s playing. Both Mobile Keys models are compatible with any iOS app that supports the CoreMIDI standard for input, including GarageBand and numerous drum machines, synthesizers and virtual instruments.

The keyboards require no additional hardware to function; they plug right into an iOS device’s dock connector. They’re bus powered, so they need no external power supply or batteries. The two keyboards are equipped with pitch bend and modulation wheels for additional sonic control, and they also have a pair of quarter-inch TRS jacks for plugging in sustain and expression pedals.

Both keyboards also have USB jacks and are USB class-compliant, allowing connection with Mac and Windows desktop and laptop computers. The suggested retail price for the Mobile Keys 25 is US$149.99, and Mobile Keys 49 is $199.99. Both are slated to ship soon. For more info go to http://line6.com/mobilekeys .