alaTest has collected and analyzed 18 user reviews of Coby High-Performance Isolation Stereo Earphones CVEM78BLK (Black) from Amazon.com. The average user rating for this product is 4.1/5, compared to an average user rating of 4.2/5 for other products in the same category on Amazon.com. Reviewers are impressed by the bass quality and size. The price and sound also get good reviews. There are some mixed opinions about the design. Some have doubts about the usability and reliability.