Legendary Sound. Legendary Design.

Ever since John C. Koss invented the world’s first SP/3 Stereophone in 1958, Koss has been dedicated to bringing high-fidelity audio to listeners around the world.

From the exceptional performance of the A/550, to the iconic retro-style design of the Porta Pro and KPH40, to the legendary ESP/950 and Pro4AA, Koss has spent over 65 years advancing headphone design through innovation, ingenuity, and integrity. Our high-fidelity headphones combine precision-engineered dynamic and electrostatic drivers, carefully tuned frequency response, and purpose-built acoustic designs that deliver the detail, accuracy, and transparency discerning listeners demand... All engineered in Milwaukee, Wisconsin.

Explore the Koss Audiophile Collection and experience unmatched performance design, and comfort you have to hear, to believe. #HearingIsBelieving