M-Audio Oxygen 49 USB Midi Electronic Keyboard for sale online | eBay
Amazon.com: M-Audio Oxygen Pro Mini – 32 Key USB MIDI Keyboard Controller With Beat Pads, MIDI assignable Knobs, Buttons & Faders and Software Suite Included : Everything Else
M-Audio Oxygen 49 MIDI keyboard hits Amazon low at $149, plus AKAI and more from $49