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!