Poor quality of materials, one ear is not working after a 1.5 year of use.

As other reviewers mentioned, silicon/rubber coating on the ends of the neck piece started to detach and bulge approximately 6 moths after the purchase. Then, a few days ago, one of the ears stopped producing sound. This is after a year and a half of use. Not OK for a $300 headphones. Will submit a warranty claim to return/replace. Otherwise the sound quality is good, noise cancelling is OK for white noise (very good for the airplane), but very poor for human speech, and other higher frequency noise.

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