First headset with active noise reduction and first shock. This actually changes to move from a simple helmet with his smartphone has offered this Audio Technica. The sounds are deeper, warmer which allows me to appreciate my music a bit more. But the biggest remains active noise reduction. I was skeptical about the real contribution of such technology and I must say that I am still amused that it's effective. This will not solve all the problems with noise during transport, but it can already make a sacred step toward seeking a quieter environment. Another little more (or less also at times ^^) is that it does not filter the human voice. We are not disconnected from the world around us (at least humans) and is a more ... Although sometimes, I will me many phone discussions neighbor.
Comfort level, bits are valid and helps to fit well in the ears. Ideal for "close" them and to better prevent outside noise. Rest noise reduction portion is offset in a little box. This is very little compelling and I look forward one day no longer have one and all in the headphones (when the miniaturization of this will be possible).
In the end what to say? This is a sum to pay (~ 70) for a single pair of headphones. But when it allows to find some peace in this noisy world, I think it's a reasonable investment. Subject of course the quality of the helmet. Nothing RAS to report about it. Brief delighted and conquered, I highly recommend it! :)