The sound is really good overall for my taste, also good enough bass, I notice no difference to my cable headphones, So for me perfectly adequate as I mainly use the headphones for action movies to my fellow human beings to save something.
It is a closed-back headphones, so you get hardly anything with the environment, and vice versa. It is closed so that the ears can start to sweat :-)
Special praise for the German printed and good Handbüchlein what is today sadly become a rarity even in high-priced equipment.
It is a pity that the TV does not mitkriegt that the headphones are off and does not automatically switch back to the speaker output, VLT. can pull out the plug the other television, I must in any case ... well
Update 08/14/2014
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Unfortunately, I regret to say that the radio frequency of 2.4 GHz intersects with my wireless and makes it very slowly, a changeover to only 5 Ghz the WLAN has shown that it is no longer stable, and the headphones can not change them , Too bad I can not do anything with it and send it back yet this week. I really should be awarded only one star but that would be an otherwise good set of headphones does not do justice. So I draw from just one point.