Summary: These headphones have amazing sound and very full base. Further, they're very comfortable and stay put in your ears, unlike some others that I've tried that fall out constantly. The problem is, they wear out, FAST. I have now purchased 3 pair of these headphones within the last 2 years. They last less than 9 months each, and then the left headphone starts crackling, then going in and out, and then dies completely.
Summary: Beware of purchasing B&W, all is not as it seems unless you definitely buy from a registered B&W supplier (something not made clear until too late). B&W will not honour any warranty unless purchased through a registered supplier, they will still let you register the product and only tell you this when it is too late! Very very disappointing!
Pros: Great sound when working
Cons: Only had 5 months, no sound from one earphone