When I first got these, they sounded pretty good, not great though due to the extremely genre-specific nature. I returned them partly due to this nature they had (leaning towards Hard Rock/Metal, Rap, R&B, Electronic, all the bass-heavy stuff), That's the short review, now onto the long one:
I had two different types of earpads for these, the factory and the XL. The reason I feel the need to do this is because the quality is so different between the two that it would be misleading not to compare. So here we go:
-Highs and Mids quite warm (Not the best with telling which ones are the mids and highs, but compared to my M50x, the mids were surprisingly cleaner.)
-Bass was definitely present, but not extremely booming. Pretty clean as well.
-Sound staging was quite nice, albeit tight, but precise
-Mobile listening as a basshead
-Comfortable... For an hour. It was to the point where I couldn't do what I wanted to with them after two hours, and HAD to take a break.
-Lows are drowned out by bass (I think? Sorry I'm kind of noob at IDing specific)
-Tight sound stage (this is more preference-based, though)
-Unless your sticking to the specific genres, the instruments sound poor
-Wider sound stage than the basic cups
-Even more bass (preference)
-Mobile Listening is destroyed
-Lows are even more recessed
-Mids become recessed like the lows
Here is an explanation for why I returned these headphones:
Don't get me wrong, these worked great as mainstream mobile cans, which was their intended purpose. Hell they work damn well for gaming with the tight stage. But my main issue with these headphones is, you have two options:
Comfort or Sound Quality
Which one do you want to suffer more? Because one must suffer with manufacturer pads, you can't have a nice sound and comfort without making your own pads, and I'm not putting in the time for these things.