Bests & Worsts Reviews from Amazon

It didn't take long to realize these headphones had too much low frequency. Without the noise cancelling the sound is completely different, sort of like listening to a very clean bass feed, a bit too vivid. If you turn on noise cancellation, the bass dies down a bit, and the rest of the auditory frequency range comes to play, but it loses all definition and is unpleasant - almost an echo sound, boxed in. Bottom line, the sound is not very good. I will return it. Update. After returning these headphones for a refund, I have received multiple overtures from the vendor asking me to change my rating from three stars to five stars. I was offered free headphones and doubled up refund. The final straw is when I was offered upgraded headphones if I would reconsider my position. I agreed to receive the new headphones and write a new review based on a truthful experience. The customer experience person then told me they would only ship the headphones if I FIRST deleted my review. I consider this kind of aggressive suppression of truthful reviews as a very unethical business practice. If they invested more in product quality and less in post customer experience and bullying, I would have given them a positive review to start with. Do not believe the positive reviews, they must be arrived at through unethical means because the product is very poor in quality. Please see credible reviews from CNET and others. You'll realize that apart from the many that get free stuff to say good things, this is a low quality product.