The Koss QZ99 Passive Noise Reduction Headphones were designed for racing radio scanner and metal detector users, hence the superior isolating capabilities and unique behind-the-head headband design. These KOSS Headphones have since become a favorite for audiophiles who crave the ability to cut out high levels of ambient noise without the constraint of a conventional headband. The Koss QZ-99 Headphones are great not only for noise isolation, but also for sound quality.
The Koss QZ99 Noise Reduction Headphones will connect to most scanners and radios. 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 Stereo Headphones are sporty and strong, with superior sound quality. The KOSS Passive AZ99 Headphones are every audiophile's dream.