I have have these headphone for a few day now and have to say that I be really impress by they beautiful sound and superb comfort . the sound from these headphone really bring alive you jazz , rock and hip-hop favorite ... if you do not already have nice headphone you 'll be hear thing in you music you have never hear before . a great example for I be listen to Ornette Coleman 's `` the shape of jazz to come '' follow by the root `` do you want more ?!!!??! '' play through iTunes at 128 kbp \/ 44.100 khz - not exactly a range advocate by audiophile , but the music sound full , rich , complex and beautiful ... very nice response from deep bass to high end . if you be go to be listen to CD 's or audio through a ipod or computer at home , these headphone be perfect . any better headphone be go to be a waste of money unless you be go to be listen to vinyl through a nice amp . note : the impedance of these headphone be 50 ohm , not 120 ohm as list on Amazon . this make these headphone perfect for listen to portable electronics \/ computer , rather than more expensive headphone like the hd-595 's which will really require a separate headphone amp to bring out they best . a additional note for first-time headphone buyer - these be `` dynamic , open '' style headphone , which mean that these be best for home use . the open style mean that some audio be go to pass from the outside of the headphone -lrb- would drive officemate in a quiet office crazy -rrb- , and external sound be not go to be well attenuate - mean that they be perfect for a quiet home or office , but will be poor for subway \/ airplane \/ noisy street use . overall a great set of headphone for they purpose - home audio \/ portable electronics .