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The Koss PRO4AAAT over-the-ear headphones model closed vinyl ear cushions, 2 mm Mylar diaphragms, and noise-isolating functionality. Additional features include a 10 – 25,000 Hz frequency response, 98 dB/mW sensitivity, and 250 ohms impedance.
- Circumaural design
- Closed vinyl ear cushions
- 2 mm Mylar diaphragms
- Noise-isolating functionality
- 10 – 25,000 Hz frequency response
- 98 dB/mW sensitivity
- 250 ohms impedance
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