With the M-Audio Axiom 25 USB MIDI keyboard controller, you get an array of MIDI controls in a USB-powered package that won't eat up much desk space. It has velocity-sensitive, semi-weighted key action with assignable aftertouch, 8 rubberized trigger pads for drum programming, 8 endless rotary encoder knobs, 6 transport controls, pitch/mod wheels, and a backlit LCD. The 25-key MIDI controller also offers assignable sustain/expression pedal jacks, octave up/down keys, transpose up/down keys, 20 memory locations, and USB or AC power operation. The M-Audio Axiom 25 comes with Enigma librarian/editor software for unlimited control of MIDI setups with your computer and Ableton Live Lite music production software.