I do not want to miss ...

To explain: I am traveling a lot, both by train and by plane. And in these places the QuietComfort can 20i play your greatest strength - the noise reduction.
I write aware of noise reduction, because you can not expect these headphones to hear no noise "from outside" more. But what is creating the headphones in my eyes (ears) already quite remarkable.

If you switch only the noise reduction is a without having to listen to music or the like, there is already the first "aha effect".

The noise produced by railway disappear quite well, the babble of other passengers as well. If you start now the movie or music, you manage (at normal volume) all the sounds that do not belong to the music or the film that completely hide. You have to very focus to something else to hear.

On the plane - I admit it - I was at first a little disappointed (and I am there in every flight at the beginning again). It turns on the headphones and the loudest hum disappears immediately. Nevertheless, the usual flight noise is still audible. However, it turns (at least for me), a similar effect as in a train or ... once you start the movie or the music or the audio book. Again, you have to the volume control does not move as far as possible but hears everything well on "low volume". Voices of the immediate neighbors disappear almost completely, the flight noises that still get through "forgets" at some point. The real "wow factor" has when one between the headphones settles again. Only then you notice how much noise a has remained just spared. And that's always the moment at which I congratulate you for the purchase. From disappointment, as shortly after the start, no trace.

Sometimes I put on even in the office when the phone a lot or colleagues to talk - but I have to urgently focus go into extensive figures. Even as it lay the headset to reduce the ambient noise significantly.

To the sound - and thus to what are the ghosts:
Yes, I admit all sound experts right! The sound of the headphones - in a quiet environment - is not really outstanding. The sound is a bit muffled or dull. Not extreme and I find the sound and absolutely fine, but also it would be better! But I also think, whoever puts really value good sound, you should not buy In-Ear Headphones - of what not to mention noise-canceling entirely.

And therein lies the hook and for me the argument that clearly helped these headphones speaks: You do not want to be taken for the perfect sound in a quiet atmosphere with no distractions. They are intended for precisely the opposite! They want to create decent audio enjoyment in environments that are not really suitable exactly for it. Because where there is loud or at least noisily.

And that is why I bought it ... and the purchase today regretted a single minute!

I might as well give 5 stars - but maybe there is an opportunity to make the sound even a bit better :)