This AKG K 915 stereo Funkkopfhöhrer fulfills all requirements of a headphones. The written here Rezesionen refer either to another article, or are written by clueless idiots Technology. If in the fall a the earbuds or the charging station is not taken the evidence of mis-reporting but already other customers over. Sorry, to all the left with two hands and other ailments, but these headphones deliver a great sound, only the volume can not be set too high. Bass and treble are absolutely OK. One should, if one knows nothing, read the instructions carefully, little tip from me. Buy recommendation from me. Greeting GGE