I had trouble with the in-ear headphones that were supplied me with my MP3 player again: Even if they were sound not so bad, as the SanDisk Sansa Clip Zip MP3 player, it occurred to me either always again from the ears out or clogged. Encouraged by positive reviews on Amazon's why I bought the KTXPRO1. So far, my impression was positive. It is light, but my impression is not also less stable than much more expensive headphones that are so well largely plastic. The sound is perfectly for my taste, considering the moderate price. He is well-adapted to the head shape and - what is very pleasant - you can also on the headphones - and not only, for example the MP3 player - adjust the volume. For this price range I a strong buy recommendation.