Only for television

what I missed in the comments:
- The KH is designed really just for the TV sound playback (speaker) (see frequency spectrum), for the words' --TV "
probably because I have not taken seriously
- In music programs (Connection directly to the TV) it is an insult to the ears (no bass, unbalanced sound)
- An attempt to achieve better sound on the device connected to the TV Yamaha surround system, failed absolutely.
Actually, it was only to be expected, after all of KH and not Yamaha is responsible for the sound,
But hope dies last known
The useful features such as separate volume control and extra long cable not compensate for the weaknesses,
because first and foremost I would like to sound and no cable.
After about 2 years rumplagen it is Christmas now finally landed in the scrap,
and was replaced by the Christmas gift of a Berlin manufacturer (angels or something like :-)).
Since then, four hours 3sat pop concerts on New Year's Eve on Yamaha and KH my ears are very pleased with me,
had a great experience. Especially since the price was it similar to that of the Sennheiser.