The Koss QZ99 Passive Noise Reduction headphones were initially designed for racing radio scanner and metal detector users, with its superior isolating capabilities and secure over-the-head headband design. It has since become a favorite for audiophiles who crave the ability to cut out high levels of ambient noise. The QZ99 are not only for noise isolation, but also for sound quality.
Specifications:
The QZ99 Passive Noise Reduction headphones sport neodymium magnet structures that deliver outstanding clarity and definition. The closed Pneumalite™ ear cushions and extra-secure headband create a tight seal around the ear eliminating all ambient noise. Durable and built to withstand the rigors of indoor and outdoor use, the Koss QZ99 also includes a volume control on the ear cup that makes adjusting sound levels a snap, and a stereo/mono switch that extends user flexibility. Sporty and strong with superior sound quality, these Passive Noise Reduction headphones are every audiophile's dream.
Specifications:
- Cable Length: 8 ft
- Sound Mode: Stereo
- Impedance: 60 Ohm
- Minimum Frequency Response: 40 Hz
- Maximum Frequency Response: 20 kHz
- Features: Built-in Clip and Pivot Mechanism
- Noise Canceling: Yes
- Sound Pressure Level: 102 dB