Passive Noise Reduction Headphones Neodymium Magnet Structures Deliver Outstanding Clarity & Definition Closed Pneumalite(Tm) Ear Cushions & Extra Secure Headband Seal Ears, Eliminate All Ambient Noise Volume Control On Ear Cup Allows Easy Level Adjustment Stereo/Mono Switch Extends User Flexibility Passive noise reduction stereophone system isolates listener from ambient sounds Volume control on earcup for easy level adjustment Ideal for use with racing scanners and metal detectors Stereo/mono switch for added flexibility Single-entry, 8-foot coiled cord Koss Qz99 Passive Noise-Cancelling Full-Size Headphones The Koss QZ99 headset is a passive noise-reduction stereophone system that isolates the listener from ambient sounds, allowing clear and focused listening of the intended aural signal. Ideal for use with racing scanners and metal detectors, it includes a volume control on the earcup for easy level adjustment, a stereo/mono switch for added flexibility, and a single entry, 8 foot coiled cord.
