The first dynamic headphones to deliver true full frequency and high fidelity performance with impressive noise isolating capabilities.
8 foot coiled cord with 6.3 mm (1/4") Plug.
Whether you’re a sound professional or an audiophile the Pro4AAs delivers the excitement of a live performance with every recording.
Ever since I invented the world's first SP/3 Stereophone back in 1958, Koss Stereophones have been bringing back the excitement of a live performance. Music lovers around the world recognize that dedication to accuracy in sound reproduction as: The Sound of Koss®