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Koss QZ-50

alaTest has collected and analyzed 20 reviews of Koss QZ-50. The average rating for this product is 2.5/5, compared to an average rating of 4.0/5 for other Headphones for all reviews. People really like the noise isolation and price. The sound and usability also get good feedback, whereas there are some mixed opinions about the portability. Many are less positive about the size.

comfort, usability, sound, price, noise isolation


We analyzed user and expert ratings, product age and more factors. Compared to other Headphones the Koss QZ-50 is awarded an overall alaScore™ of 64/100 = Good quality.

Review analysis

(Based on 20 reviews)

User Reviews  

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Consumer review by: ( review summary for Koss QZ-50


alaTest has collected and analyzed 19 user reviews of Koss QZ-50 from The average user rating for this product is 2.5/5, compared to an average user rating of 3.9/5 for other Headphones on Reviews about the noise isolation and price are overall positive. The sound and usability are also mentioned favorably. Many are less positive about the size, while opinions are divided on the portability.

comfort, usability, sound, price, noise isolation


21% of the reviews on give this product a positive rating.

This summary is based on the product: Koss QZ50 Stereophone

Nov, 2015

Consumer review by: barrem01 (

Average Sound, Dorky Look, No Noticable Noise Cancellation ”


I'm a big fan of Koss stereophones. I'm almost never without a pair of PortaPros. I own two pairs of Porta Pros because when one pair broke, I bought a second pair to hold me over untill the first pair was replaced under their lifetime warranty. I like...

Feb, 2008

Product Specifications

New advances in materials and design have served to expand the performance of stereophones. Koss' Product Development team and engineers look for the most innovative combinations of existing and new technologies to deliver the most exciting products possible. Koss QZ 50 model features a revolutionary Active Noise Reduction (ANR) stereo phone system that reduces harmful and annoying low frequency sounds in noisy environments; a dynamic element for full sound reproduction as well as a behind-the-head stereo phone design for maximum comfort during extended wearing periods.

Audio Input

Type: None

Audio Output

Headphones Form Factor:Behind-the-neck
Headphones Type:Binaural
Product Type:Headphones
Response Bandwidth:30 - 20000Hz
Sound Output Mode:Stereo

Audio System


Dimensions & Weight



Packaged Quantity:1
Product Line:Koss QZ

Service & Support

Type:Limited lifetime warranty