hissing sound, very difficult

The sound is really good, especially acoustic recordings so listen to very very good. Bass is little available, but this need not necessarily be a counterargument. But what in my eyes a KO criterion is:
The headphones have a strong tendency to Hissing. In other words, sibilance sting very strongly marked. This comes from the slight increase of the middle headphones. This precisely these disturbing frequencies are amplified. Now, if you can hear acoustic recordings that were not previously passed through a De-Esser, which filters out these frequencies specifically, hurts every "S" while singing or any hi-hat at the concert.
I have a lot of different songs heard - numerous songs from the charts - many of which have been filtered not by sibilance. These headphones unfortunately this falls on extremely.
Also replacement headphones from hell had the same effect.

A second point is the very poor handling. Although the metal-made headphones look great and work dibasic. In the ear is very cumbersome, because they are the high weight to the outside, and yes they are very far outwards. The whole looks very weird. Through the wide protrusion, affects the whole like a lever and pulls the headphones down.

A good alternative is the Phonak Audéo PFE with gray filters (neutral sound)