I have mixed feelings about this headphone.
First impression: WOW this is excellent!
Next thought: an Audeze LCD with EQ to correct the response, gives the same result (lowest distortion Amir has measured) for less than half the price.
OK, the Stealth looks lighter and more comfortable.
Is that worth $2.5 k ?
I have both. The Stealth is lighter and more comfortable for sure. I can see how hipsters and fans of 'authenticity' would like the slightly Frankenstein bolted together 'honest' (in reality more like honestly we didn't know how to do CAD and composites properly when we started out.. too late now, design language lock-in) aesthetic of the LCD-X. Dan's products are state-of-the-art modern materials computationally-derived form-follows function in the Current Year. So more authentic in the true sense of the word, if you ask me.
That being said, Use Amirm or Oratory1990s PEQ settings for the LCD-X and they're so close to what the Influencers call End Game that it makes. no difference.
If I were sane, I'd own just the LCD-X (PEQ'd) or the Expanse (no EQ) and the Stealths (no EQ) to cover open- and closed-back use cases. However, I am neither remotely sane nor rational... I am a human being instead, and like to play with different headphones with different aesthetics and haptics at different times and in different moods. To be fully consistent, I shouldn't Harman PEQ any of them and enjoy the aural differences.. but that would be logical. Can't have that.