Koss QZ99 Passive Noise Reduction Stereophone

The Koss Quiet Zone™ QZ99 stereophone is an extra-durable stereophone that delivers amazing passive noise reduction. Designed initially for use with racing radio scanners and metal detectors, the QZ99 has been a favorite for a wide range of listeners who need to cut high levels of ambient noise.

Built to withstand the rigors of outdoor or indoor use, the QZ99 features both a 3.5 mm and 6.4 mm plug and will connect to most radios and scanners.

The QZ99 features neodymium magnet structures for outstanding clarity and definition.
Closed, Pneumalite™ ear cushions and extra-secure headband pressure create a complete seal around the ear eliminating all ambient noise from getting through.

A volume control on the ear cup allows for easy level adjustment if the sound source is out of reach. A Stereo/Mono switch extends your user flexibility.

The QZ99 features an 8-foot, coiled, single entry cord.

Specifications

Frequency Response	40-20,000 Hz
Impedance	60 ohms
Sensitivity	102 dB SPL/1mW
Distortion	<0.3%
Cord	Coiled, Single Entry, 8ft