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DESC: The Koss® QZ/999 noise reduction stereophones utilize a Passive Noise Reduction stereophone system that isolates you from ambient sounds. They have a volume control on earcup for easy level adjustment and can be used when operating racing scanners and metal detectors.
ATTENTION! We recently updated our privacy policy. The changes are effective as of Thursday, October 30, 2008.
To see the new policy, click [here]. Questions? See the policy for the contact information.