Sporting a compact 32 keys, the M-Audio Axiom Air Mini was designed specially for mobile music production, making it the perfect MIDI controller for musicians on the go. Featuring eight pads, eight assignable knobs, and auto-mapping technology, it's as easy as plugging in and playing -- assigning your effects is incredibly easy with the Axiom Air Mini. The Air Mini also boasts octave up and down buttons, a sustain control, transport controls, two pitch bend buttons and a mod button, all packed tightly into one sleek unit.