I buy these headphone over 3 year ago , and they be still go strong . I use they in the office only , so they get little abuse -lrb- e.g. I do not blast the bass at work , or anything -rrb- . I have drop they a number of time , though , and they do not break . the sound quality be good for listen to cd , but like I say , I do not blast the bass or anything . finally , they be extremely comfortable . I wear they for 7 + hour some day and they do not bother I one bit .