Koss QZ77

alaTest has collected and analyzed 29 user reviews of Koss QZ77 from Amazon.com. The average user rating for this product is 2.9/5, compared to an average user rating of 3.9/5 for other Headphones on Amazon.com.

The main downside to reviewing a noise reduction kit is the constant reminder that the technology is over-hyped and still below par. As a science, noise reduction/cancellation is still work in progress! Take the Koss QZ77, which incorporates both...

Noise reduction is a niche market. Does the QZ77 meet our expectations?

The main downside to reviewing a noise reduction kit is the constant reminder that the technology is over-hyped and still below par. As a science, noise re

With headphones that penetrate deep into the ear canal, the QZ77 earphones provide an effective seal against exterior noise.