Koss Corporation, along with its affiliated companies, specializes in the design, manufacturing, and global distribution of stereo headphones and various related audio accessories. Their products are marketed across numerous countries, including the United States, the Czech Republic, Sweden, Canada, Russia, Japan, and Malaysia. The company's extensive product line encompasses high-fidelity headphones, wireless Bluetooth headphones and speakers, computer headsets, telecommunications headsets, and active noise-canceling headphones.