these be outstanding headphone , by far the best available in the price range . build quality feel substantial . sound quality be well-balanced and detailed , though ever so slightly muffle -lrb- difficult to over come with closed-back can -rrb- . sound leakage be minimal . if you want great sound , do not want to break the bank , do not care about hip look , and do not need to wear they strictly uninterrupted for more than 2 hour , do not hesitate .