About the product
- 1970 - Koss set the standard for full-size professional headphones with the iconic Pro/4AA
- LEGENDARY SOUND - The first dynamic headphones to deliver true full frequency and high fidelity performance
- ICONIC DESIGN One of the most recognizable headphones around the world
- NOISE ISOLATING Over ear design with superior noise isolation
- COIL CORD Compact 8 ft coiled cord with 6.3mm (1/4 in) plug
- HIGH FIDELITY AUDIO 250 ohms / 10-25,000
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