As other reviewers have reported, these headphones sound unbelievably good - the clarity of sound is amazing, and the bass very rounded. The build quality appears excellent - leather phone covers and over the headband, beautiful chromed metal and brushed aluminium throughout - they feel solid, and pleasant to hold. The huge catch, as one other chap has reported, is that they break - VERY VERY easily. The pin connecting the phones to the headband is very thin, and what you cannot see is that it is even thinner inside the fitting - about 0.5mm diameter. You only find this out when it shears off... If you are lucky, this is early enough to reasonably claim a refund. Mine were bought in February 2011, and have just failed - October 2011 - having been used occasionally and treated very carefully indeed. How did I break them? - I put them (not threw them) onto my duvet on the bed. That's it. Tough treatment, right? If you use these every day (which I don't) these will likely break a lot sooner. Amazon are sending a new set free of charge - let's hope they last longer than the first - thanks Amazon !