Koss Corporation is engaged in the design, manufacture and sale of stereo headphones and related accessory products. The Company operates in the audio/video industry segment of the home entertainment industry. It markets a line of headphones, wireless Bluetooth headphones, wireless Bluetooth speakers, computer headsets, telecommunications headsets, active noise canceling headphones, and compact disc recordings of American Symphony Orchestras on the Koss Classics label. It markets products used by consumers to listen to music, digital versatile discs (DVDs) in vehicles, sound bytes on computer systems, and other audio related media. The Company's products are sold through retailers, distributors, audio specialty stores, the Internet, direct mail catalogs, regional department store chains, discount department stores, grocery stores, electronics retailers, military exchanges and prisons. It has a manufacturing facility in Milwaukee, Wisconsin. Koss U.K. Limited is its subsidiary.