The reduction of ambient noise is decent. We are a bit in a bubble with it on the ears. The reduction is effective especially in the low frequencies, and eliminates fine motor noise. Luckily, it's the bass that tend to move the insulating walls and hide when playing music. In the acute, little difference between the mode with or without the reduction. It's a bit like a low cut filter, but that cuts outside noise and not music!
The audio quality is good, but it is not the high-end hardware (I have a Sennheiser HD 25 for comparing, I am sound engineer), but it will be good enough for amplified music lovers. A little just to classical, I found that the stereo was a bit restricted on pianos for example, it lacks breadth. But nothing serious.
Good radio reception on my cell from the original headphones.
In the street, watch for cars ... we hear more!
I tried in a closed headphone Bose store significantly more expensive and it did not seem to me to do much more. Nevertheless it would be testing under identical conditions to really compare.
The device has a small box with a cylindrical battery, a switch for noise reduction and volume control, it will clipper somewhere. The doc says that we should not ... weird rechargeable battery.
Ah otherwise damage the cable is a little "cheap" and that have a tendency to make knots ...
