Inspired by positive reviews and I have let myself be tempted good two hundred euros to invest for the KH. The name speaks for itself KEF therefore could only be good. Unpacked and admired ... Cool touch. First wearing really easily and without pressure. Very pleasant. The first hearing querbeet truly amazing. I was excited. I purchased the KH but for mobile use. On the way to the station, cross the Dutch town .... etc. Since then the initial enthusiasm was gone. The sound experience was overshadowed when I had every step you take a dull roar in the ears. I ran as normal. Not jogging and running or not hopped and jumped or. That was really unpleasant. Still sitting on the train or in the plane of which is certainly not affected. Have the KEF sent back and orientate myself differently now. Let's see what there still is ...