Well I have been using this headphone for quite a while and the sound is extremely good
. the build quality is ok not excellent though. Songs with requires base are played really well.
Just close your eyes and you will feel like as if you are in a club house
but it is not recommendable for those who are more into vocals as the performance in that area is not excellent but good.
At this price it is a great deal and coming from sennheiser you shouldnt think twice.
Also tips fit quite well.