The iRig Keys I/O 25 is a highly portable MIDI controller keyboard featuring an integrated 24-bit/96kHz audio interface. The keybed features velocity-sensitive full-size keys and comes complete with 8 velocity-sensitive multi-coloured pads and 5 programmable touch-sensitive knobs. The velocity-sensitive pads are ideal for a range of applications from finger drumming to triggering samples and more. The integrated audio interface boasts a range of connectivity including a Neutrik combo input for line-level equipment instruments and microphones. It also features balanced stereo and headphone outputs. The iRig Keys 25 is can be powered either by USB bus power of 4 x AA batteries.