Helmet absolutely neutral, too low, they will invade! it really lacks air! for a few dollars more, buy an AKG K271 and the difference in quality is obvious. Impossible to make a mastering with this headphone! despite the apparent strength, the plastic is brittle ... the insulation surrounding noise is not bad which makes use of a DJ! dynamics is correct but the spectral balance is catastrophic in comparison to other brands ... very disappointed, because on paper the features are attractive and the term "pro" "professional headphone monitoring" did not match anything professional! in addition, it is uncomfortable!
Finally, fortunately I have been offered ... go your way on this headphone as compared to the AKG K271 is two different world ... and for a few euros more!