Product code: Koss sold Pro4AA headphones
Koss Pro4AA headphones set the standard for full size professional headphones. They were introduced in 1970 as the first dynamic headphones to deliver true full frequency and sold high fidelity performance with impressive noise isolating capabilities.
Koss Pro4AA headphones set the standard for full size professional headphones. They were introduced in 1970 as the first dynamic headphones to deliver true full frequency and sold high fidelity performance with impressive noise isolating capabilities.