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