Amazon.com: M-Audio Oxygen Pro 25 – 25 Key USB MIDI Keyboard Controller With Beat Pads, MIDI assignable Knobs & Buttons and Software Suite Included : Everything Else
M-Audio Oxygen 25 3RD Gen USB MIDI Keyboard Controller - Tested! | eBay
M-Audio Oxygen 25
M-Audio Oxygen 25 MK IV 25-Key USB MIDI Keyboard Controller MKIV MK4+Mic+Cable - Walmart.com