The Koss® QZ5 noise-cancelling headphones utilize a Passive Noise Reduction stereophone system to isolate you from ambient sound, making them ideal for use with racing scanners and metal detectors.
The neodymium magnet structures provide outstanding clarity and definition and the unique head-strap, VELCRO® brand closure design allows for a secure fit.
Stereophone features neodymium magnet structures
Passive Noise Reduction stereophone system
Unique head-strap, VELCRO® brand closure design allows for a secure fit and immobilization of stereophones
Comments about Koss QZ5 Noise Cancelling Headphones:
I bought these because they were advertised by Sports Authority as "noise-cancelling." The packaging clearly reads "passive noise reduction." "Noise-cancelling" means that the device actively produces soundwaves to cancel out surrounding noise. "Passive noise reduction" simply means that the headphones are constructed to prevent sound from reaching your ear.
If you are trying to buy noise-cancelling headphones, these are not for you.
Was this a gift?:
Bottom Line No, I would not recommend this to a friend