Denon (株式会社デノン, Kabushiki Kaisha Denon) is a Japanese electronics company that originated Digital Audio technology, while specializing in manufacturing of high-fidelity professional and consumer audio equipment. For many decades, Denon was a brand name of Nippon-Columbia, including the Nippon Columbia record label. In 2001 Denon was spun off as a separate company with 98% held by Ripplewood Holdings and 2% by Hitachi. In 2002 Denon merged with Marantz to form D&M Holdings. The Denon brand came from a merger of Denki Onkyo and others in 1939.