Looking for a compact, reliable MIDI controller This Used M-Audio Oxygen 25 Key MIDI Controller is in Good condition and perfect for producers on the go or with limited studio space. Featuring 25 velocity-sensitive keys, 8 assignable knobs, and transport controls for seamless integration with your DAW, it's ideal for music production, beat making, and synth programming. Compatible with both Mac and PC via USB, it offers plug-and-play convenience without the need for additional drivers. Plus, its lightweight design makes it a great addition to your mobile setup. Whether you're starting out or need a portable solution, the Oxygen 25 delivers performance and versatility at a great value.