Koss Corporation designs, manufactures, and sells stereo headphones and related accessories worldwide. It offers a line of high-fidelity stereo headphones, speaker-phones, computer headsets, telecommunications headsets, active noise canceling stereo headphones, wireless stereo headphones, and compact disc recordings of American Symphony Orchestras under the Koss Classics label. The company sells its products through national retailers, international distributors, audio specialty stores, the Internet, direct mail catalogs, regional department store chains, discount department stores, military exchanges, and prisons under the Koss name. Koss Corporation also sells its products to distributors for resale to school systems, and directly to other manufacturers. The company was founded in 1953 and is headquartered in Milwaukee, Wisconsin.