Company Story
1953 - John C. Koss founded Koss Corporation in Milwaukee, Wisconsin.
1958 - Koss introduced the first stereophone, the SP-3.
1962 - Koss developed the first commercial stereophones, the Koss SP-33.
1963 - Koss introduced the first electrostatic stereophones, the Koss ESP-6.
1968 - Koss developed the first dynamic stereophones, the Koss Pro-4AA.
1972 - Koss introduced the first self-contained, battery-operated stereophones, the Koss SQ/HD.
1989 - Koss introduced the first wireless stereophones, the Koss Wireless.
1991 - Koss developed the first computer-based stereophones, the Koss CS-100.
2005 - Koss introduced the first noise-cancelling stereophones, the Koss QC-1.
2011 - Koss introduced the first wireless noise-cancelling stereophones, the Koss Striva.
2015 - Koss celebrated its 60th anniversary and introduced new products, including the Koss BT540i.