I use these headphones for a year for 6 hours a week and it has not moved. The quality of sound is not bad at all for that price! The particular feature I like most is its sound: an "arc" between the two atria of unbreakable numark APRS (I never tried to bend it but yes it has the air solid), a single cord and its strong o pais good rigit which he holds in place.
The report is qualitprix Excellent ......... home! Indeed, the ds we find ourselves in evening, he does not isolate enough of the collection's outdoor environment which makes it necessary to push the sound back and suddenly we dtruit ears .....
I plan to buy a second headset that "isolates" best for night. but I keep this one to mix with me because it is a good product.