these be decent , but not great sound headphone . I be review they in the context of a set of headphone use without a headphone amp , plug into a decent sound source -lrb- which I have test with other headphone and know it have enough power to easily drive a pair of 64 ohm headphone -rrb- . so while I suspect a dedicated headphone amp might change the review a little , I would be surprise if it make a night and day difference . however , please understand that since I have not try they with a dedicated headphone amp , if that be how you plan to listen to they you mileage may very well vary and you would likely be better serve by a review from someone who have . with that out of the way : First , what they do well : - good balance on the mid and high , slight bright coloration , but not too much - good external noise isolation , even without sound -lrb- I use they at work -rrb- - decent sound stage , not super expansive but definitely above average . - average immediacy of attack . not really fast like Grados , or on the slow side , like Sonys - somewhere in between what they do not do well : - there be a noticeable sub-bass boost , which might be great for people who like hip hop , but I like my music the way it be record I be also very careful of my hearing - which mean I have to turn the volume way down so that the thump bass be not too loud . - oddly , the bass itself be muddy and undefined . to gauge sound quality , I use these to listen to a song I have master -lrb- I do this because I know the song very well and know exactly what to listen for -rrb- . I have master it use several headphone and speaker for reference - first , beyerdynamic 880 and focal cms50 studio monitor -lrb- my recording setup -rrb- , then a pair of Sony DJ headphone -lrb- I forget the exact model -rrb- , then in a living room with Monitor Audio RS6 , then in my car , with a set of Grado SR80is and finally with some ipod earbud . get the mix to where it be fairly well balance in all these environment , especially the bass since it be a very important part of the song . through these , I notice good clarity , warm and engaging vocal . however , I could barely hear the bass -lrb- and in fact , I suspect that if I do not know the bassline by heart , I would not have hear it at all -rrb- . overall , these be decent headphone but there be better one at this price point . I find the sound scoop with a slight mid focus - which mean great for vocal , decent for crunchy guitar -lrb- which a lot of headphone do not do justice to -rrb- , but too much focus on the kick drum , and not enough clarity and definition in the bass and low midrange . if you be look for good headphone in this price range , for most style of music you would probably be better serve by Audio Technica m50 or the Grado headphone in this price range -lrb- sr60 or sr80 -rrb- \* for sound quality \* . the latter have they own drawback - they be color too , and tend to be on the bright end , but they be overall more balanced and engaging , and the brightness make they more detailed .