The M-Audio O2 follows in the footsteps of the mobile USB MIDI controller that started it all—the Oxygen8. Small enough to fit in a bag along with your laptop, the slim-line M-Audio O2 is perfect for throwing down bass lines, programming drum patterns, triggering effects and tweaking virtual studio parameters—anywhere, anytime. You get 25 full-size, half-action, velocity-sensitive keys, along with eight fully assignable knobs, 8 fully assignable buttons and other real-time control features for performance and programming. One simple USB connection serves as both a MIDI interface and bus power source. Class compliancy with Windows XP and Mac OS X means that you can get down to business without even installing any drivers.

Features:
25 full-size, half-action, velocity-sensitive keys
class-compliant in Windows XP and Mac OS X
built-in 16 channel MIDI interface
8 fully assignable MIDI controller knobs
8 fully assignable buttons
5 non-volatile memory locations
assignable volume slider
modulation and pitch bend controls
+/- octave buttons (+/- 4 octaves)
sustain pedal input
powered via USB or 9VDC adapter
3-digit LED screen
MIDI Out port
USB port
on/off switch
Kensington Lock hole
integrates with Enigma editor/librarian for unlimited memory storage*
MIDI support for CC values, note on/note off, Program and Bank Change, SysEx, and more
includes Reason Adapted Express

Compatibility:
MME
Mac OS X Core MIDI

Minimum system requirements (PC):
Windows XP (SP1)
Available USB port

Minimum system requirements (MAC):
Mac OS X 10.2.8 or higher
Available USB port