Originally by Koss

1 Supreme item sourced from Koss

Koss Corporation is an American headphone manufacturer founded in 1958 by John C. Koss in Milwaukee, Wisconsin. Koss produced the SP/3 in 1958, credited as the first stereo headphone made for personal music listening. The PortaPro, launched in 1984, uses a steel headband with adjustable temporal pads and has remained in continuous production with no changes to its tuning. Koss manufactures its headphones and wired earbuds in Milwaukee and honors a limited lifetime warranty on most models. Supreme has collaborated with Koss on co-branded PortaPro headphones.