Excellent sound: bass clearly, drums come dry and precise, no loss of altitude. The dynamics are excellent. Quietest Beckenklirren comes as clear as brilliant trumpet inserts or large string passages. The guitar playing of Buckethead I experience when I listen to it in part for the first time. Provided however: a good headphone amplifier (ie appropriate preamplifier or MP3 player) and fitting foam earplugs that seal well to the outside. Am going to my music (rock, fusion, jazz, classical) to rediscover. Some shots I can, however, forgotten now, because they are not good enough for these in-ears. Poor recording quality sounds really bad now. The comfort is good and safe if you raushat the "rotation" A lot of money for in-ears, but for me, who while driving to and from work and a half hours listening to my recordings every day, it's worth every penny!