This is totally an unbiased review based on my own opinion.
My brother has owned these for about a month and build quality is quite good and noise isolation too, but coming to sound, it is exactly what it says it is XB which stands for extra bass, which in my opinion is just too much. Mids and Highs are really drowned and you can’t really enjoy music.
Always go for neutral sounding headphones which will give you much more wholesome exoerience and also keep you from getting deaf which these headphones will surely make you.