M-Audio (formerly Midiman) is a business unit of inMusic Brands that designs and markets audio and MIDI interfaces, keyboards and MIDI controllers, synthesizers, loudspeakers, studio monitors, digital DJ systems, microphones, and music software.

M-Audio was founded in the late 1990s by Tim Ryan, an engineer and graduate of the California Institute of Technology who had co-designed the Con Brio Advanced Digital Synthesizer and helped develop MIDI software for Commodore and Apple computers, including two of the best-selling MIDI software titles at that time, Studio One and Studio Two.

[1] Midiman first established itself as a manufacturer of small, affordable MIDI problem solvers, sync devices, and interfaces.

Similarly, the same year marked M-Audio's entry to the studio monitor speaker market with the Studiophile SP5B.

With the introduction of Torq and its related hardware, M-Audio established itself in the growing digital DJ category.

M-Audio products are utilized by a wide range of artists, producers, and composers, including; Accordion-SuperStar Emir Vildic, 9th Wonder, The Black Eyed Peas, Narensound, Brian Transeau, Coldcut, Depeche Mode, Pharrell Williams, Evanescence, Jimmy Chamberlin, Gary Numan, Mark Isham, Los Lobos, Carmen Rizzo, Jeff Rona, Tom Scott, Skrillex, Chester Thompson, and The Crystal Method and many others[17] Some M-Audio products in the PCI Audio Interface category contain chipsets which support free software, notably the ICE 1712 chipset.

Version 2.6 of the Linux kernel supports M-Audio cards through ALSA without custom configuration or installation of proprietary applications or firmware.