KOSS PRO4AA Professional Headphones PRO 4AA Very Rare Vintage 1970 With Good Box

KOSS PRO4AA Auriculares Profesionales  PRO 4AA Muy Raro Vintage 1970 With original  Box

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 high fidelity performance with impressive noise isolating capabilities. 

Retired in the late '80s, Koss swiftly returned the Pro4AA headphones to its product lineup due to overwhelming popular demand. They have since remained a staple of studio headphones in the radio and recording industries. 

Koss Pro4AAs meet the stringent demands of broadcast and recording professionals who require reliable equipment and superior performance. The full size professional headphones keep unwanted sounds out while letting every note in. 

Whether you're a sound professional or an audiophile, Pro4AAs deliver superior isolation, accurate reproduction and sound intensity, and the excitement of a live performance with every recording. Connecting with your music has never sounded so good.

Features

Noise isolating professional studio headphones

The first dynamic headphones to deliver true full frequency, high fidelity performance

Standard-setting design incorporates performance-enhancing technology

Superior isolation, accurate sound reproduction and the excitement of a live performance

Durable steel and generously padded rubber headband

Adjustable slide bars ensure snug fit

8 foot coiled cord with 6.3 mm (1/4") plug

SPECIFICATIONS

Frequency Response: 10-25,000 Hz

Impedance: 250 ohms

Sensitivity: 95dB SPL/1mW

Cord: Coiled, Single Entry, 10ft