Full-Sized MIDI Keyboard Controller for iPhone/iPod touch/iPad & Mac/PC. IK Hardware. Accessories. General Merchandise. IK Multimedia #IPIRIGKEYS2P. Published by IK Multimedia (HL.323145). Item Number: HL.323145 27.5x4.5 inches. This updated 2nd edition of iRig Keys includes many new features: SampleTank 4 SE for Mac/PC users, stand-alone operation with MIDI input/output, a new headphone out for use with newer iPhones, plus a sleek new look and feel for improved appeal. Yet it also retains all the features that made the first release of these mobile MIDI controllers popular: a massive suite of software and apps, an ultra-compact design, bus-powered, and it connects to iOS, Android and Mac or PC with no adaptors required. It's perfect for practice, playing or performing! Features specific to the iRig Keys 2 Pro model includes: • 37 full-sized keys – these larger keys are ideal for more professional users • New headphone output, stand-alone operation and MIDI I/O • Lightning and USB cables included • Pitch bend & mod wheel, 4 assignable knobs, octave and preset up/down controls • Includes SampleTank 4 SE for Mac/PC plus free apps for iOS/Android.