Numark Industries is a manufacturer of audio equipment for disk jockeys,founded in 1971, and based in Cumberland, Rhode Island, United States. Numark was formerly owned by Jack O'Donnell. Numark acquired Alesis in 2001. In 2012 InMusic Brands acquired Numark, including its ION Audio, Alesis and Akai Professional brands. Numark makes DJ mixers, turntables, MIDI controllers, DJ CD players.