M-Audio Oxygen 49 MK IV 49-note USB MIDI controller : DM Audio Ltd
M-Audio Oxygen Pro 49 – 49 Key USB MIDI Keyboard Controller With Beat Pads, MIDI assignable Knobs, Buttons & Faders and Software Suite Included : Amazon.co.uk: Electronics & Photo
M-Audio Oxygen Pro 49 MIDI Controller
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M-Audio Oxygen 49 IV - 49-Key USB/MIDI Keyboard Controller Featuring Velocity-Sensitive Keys, 8 Pads, 9 Faders and 8 Knobs, Plus ProTools | First, Ableton Live Lite and 3 Premium Virtual Instruments: Amazon.co.uk:
M-Audio Oxygen 49 (3rd Gen) - USB MIDI Keyboard | Music Matter