I don't know why but I have owned the x2hr for about a year now and I just LOVE putting them on and listening to stuff. It feels like butter to the ears; that's the best way I can describe the experience of having them on my head. I'm heartbroken every time I see someone online trash these headphones and call them low resolution, technically inferior, muddy etc. It makes me question how much I am missing out using the x2hr instead of another pair, but I can't force myself to say goodbye to the x2hr yet. To me, the sound on these are very clear, very natural, and very spacious while packing plenty of bass power. Maybe the mids are a bit too distant sometimes and the imaging seems a bit off but I did test other headphones like the hd660s and the dt1990 pro which are multiple times more expensive and I was not impressed at all in A/B testing against the x2hr.
I've been a fool for audio for ~40 years, stumbling around in everything from big audiophile systems to primitive desktop systems (my current desktop system is far from primitive). This quest started including headphones ~4 years ago, and that turned into yet another very enjoyable rabbit hole to go down, all for the sake of music/love of music.
If there's one thing I've learned in that time, it's this:
when you find a component that really lights up your ears, that sounds like music to you, that helps you enjoy your music--hold onto it & don't let go. There will always be "more knowledgeable" people who talk down that component, make you start to doubt its quality & your feelings for it. Don't listen to them!
I have the original X2s. It was love at first listen & nothing has changed. Over the years I've seen people take every imaginable shot at these headphones--trashing their comfort, design, lack of replaceable pads, inability to do that "high resolution" things expensive headphones do, boomy bass, peaky treble (what?)...on and on. I just ignore it and keep listening to the X2s. Heard them the other night and felt that X2 love all over again.
Truthfully, these headphones are guilty of some of the things people say. They're not the highest resolution design out there (nor should they be, at the price); the bass can be boomy at times, depending on amp; and the pads clearly are not replaceable, not w/o a lot of sturm und drang. I have other headphones that cost far more than the X2s and sound "better" in various ways.
But I still love my X2s...