Koss Corporation, together with its subsidiaries, engages in the design, manufacture, and sale of stereo headphones and related accessories in the United States, Sweden, the Czech Republic, Korea, Malaysia, Australia, Japan, the United Kingdom, and internationally. The company offers high-fidelity headphones, wireless bluetooth headphones, wireless bluetooth speakers, computer headsets, telecommunications headsets, and active noise canceling headphones. It sells its products through distributors, international distributors, audio specialty stores, the internet, national retailers, grocery stores, electronics retailers, and prisons under the Koss brand name, as well as private label. The company also sells its products to distributors for resale to school systems; and directly to other manufacturers. Koss Corporation was founded in 1953 and is based in Milwaukee, Wisconsin.