I have rate these a half star for audio quality because they do not play sound anymore. There is a growing number of people who have experienced the terrible quality of these headphones. All of us have experienced the same: after a relatively short period one channel stops working. This is well documented in treads here on head-fi and on amazon.com that sells these headphones. As of this moment, the RE0's are rated #8 in the reviews. These phenomenal ratings reflect the fact that the RE0's sound fantastic when they work, however, this is not the full story. Buyers should BEWARE of the crap quality of these headphones.