Koss QZ-77 Active Noise Reduction Ear Plug System

$40.99

Description

The QZ77 Active Noise Canceling Earphone features both Active Noise Reduction (ANR) and Passive Noise Reduction (PNR) technology to eliminate harmful and unwanted noise while still providing the ultimate in sound. Striving for years to improve on sound and portability of noise reduction, Koss QZ77 provides maximum noise reduction in a compact design. While ANR circuit reduces low frequency noise, the PNY reduces high and mid frequencies so music and noice can be heard in clarity. Utilizing only 1 AAA battery, the QZ77 combines double noise reduction and maximum sound performance all in one complete product.

Technical Details

  • Reduces harmful and annoying low frequency sounds in noisy environments
  • Specialty ear cushion material forms slowly in ear canal providing a custom fit and maximum isolation
  • Dynamic stereophone element for extended frequency response (10 - 20,000Hz)
  • Compact design for convenient travel and portability
  • Ideal for in-flight use

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Worthless
2/10

I purchased these earbuds to use when traveling. They are awkward to use, the sound is tinny with no bass whatsoever, and the noise cancellation is nonexistent. When you turn on the noise cancellation it ups the volume a bit and adds a quiet hiss, you can still hear everything going on around you. I am actually astonished at how awful these earbuds are. I was hoping for a 50% reduction in background noise, instead I have a product that is useless in any situation. Traditional earbuds are far superior. I passed the Koss earbuds on to two other people to try with the exact same results, no one wants them even for free.
Bad product, bad design, waste of money.
Terrible product!
2/10

Wow...so many problems, where to start? First, the item is bulky and the cord is too short for the huge unit to fit in a side pants pocket. Second, the "active noise reduction" actually just increases the volume a tiny bit; it does not reduce outside noise AT ALL. The cheap rubber fittings are difficult to insert in your ear, and don't seal very well which greatly reduces the passive noise reduction. Also, the sound quality is on par with $3 disposable headphones. It is muffled and just BAD. My advice: pay a little bit more for good-sounding earbuds, and definitely don't opt for the "active noise reduction" when buying earbuds, as it is worthless, requires batteries, and is very bulky.
AMAZING SOUND QUALITY
10/10

I use these on my drum set and the noise cancellation is so outstanding that I can't even hear my drums.....at all. The sound quality is superb and the bass is so low I believe it sounds as good or better than my bose tri-port headphones. Great Price and the #1 best place to buy is here on Amazon. You won't find a better price anywhere else for a brand new pair.
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