Founded in 1958, Koss is an American company renowned for pioneering high-fidelity audio equipment, most notably the original stereophones. The company's core mission is to deliver unparalleled sound quality and innovation in personal audio. Koss offers a diverse range of products including the Porta Pro Collection, clear and transparent headphones, and wireless noise-canceling headphones with multi-point connectivity. Their market focus spans both domestic and international consumers who seek premium audio experiences.

Notable figures associated with Koss include its founder John C. Koss, whose vision established the company as a leader in the audio industry. Over the decades, Koss has achieved significant milestones, such as introducing the first SP/3 stereophone, which revolutionized personal listening. The company's impact is evident in its sustained reputation for quality and innovation, influencing both consumer preferences and industry standards in hi-fi audio.