IK Media iRig Keys I/O 25 Keyboard controler w/Audio Interface The iRig Keys I/O series evolves as the only controller available that integrates 25 or 49 full sized keys together with a fully-fledged professional audio interface featuring 24-bit audio up to 96kHz sampling rate, balanced stereo and headphone outputs, plus a combo input jack for line, instrument or mic input ? with Phantom power. Together with an audio interface, iRig Keys I/O also packs all the controls you would expect from a premium controller including velocity sensitive multi-colored pads and programmable touch-sensitive sliders, buttons and knobs for unique expressiveness and fast workflow.