these headphone be good if you intention be correct . Sennheiser call they the 570 Symphony . they be specificially engineer for symphony music and it be clear in the audio . if you want to listen to you mp3 , buy these headphone may be a bit overboard . if you listen to vocal-oriented music like opera or live recording the SSSS 's will make you cringe . the midrange feel very wierd . they do make classical sound good .  they also have absolutely amazing clarity . while the frequency responce be a bit ackward , if detail of the sound be what you be look for then these be what you be look for . the Duofol technology , of which I be skeptical at first , be amazing . the sound be crisp and clear . there be no moaning and droaning from these headphone . the sound be very very detail . these would be great for people listen through sound for small , quiet detail or for sample editing when wavematching be need . the detail provide be beautiful for that . so know what the headphone be design for before you punch $ 130.00 into they . they help I , so I like they , but I can see that there may be some problem for some people .