I would rate the sound quality as B+. Not what I would call "excellent" but still "very good". The best feature, in my opinion, is the 9 inch cable, which is long enough for me to watch movies while lounging on the couch. If you use it with portable device, the cable is too long for you. Several reviews complained about breakage. While I wouldn't call them "thin" they do need to be handled with care. I would recommend stretching them to a size larger than your head size before putting them on and then tightening them up. Overall they give you good sound and range at a great price as long as you don't overdo it.
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