I own a pair and love them. It's not the Elegia, but I had an Elear with Utopia pads and I much prefer the CX. The CX is far more comfortable, and the Elear would have terrible distortion in the bass if I cranked it. I also found the Elear to have a tiring, shouty, aggressive sound that demands your attention. The CX avoids this. My other favorite hadphone is the 6XX; comparing those two the CX is a heavier and less comfortable, has crisper highs, sounds more in-your-head (closed back) and has deeper, flatter bass. I can't pick a favorite they both have their strengths.
The CX has a detailed and neutral sound although it never escapes sounding like a closed headphone. Bass extension is phenomenal I don't understand the reviews that complain about lack of bass. Much better bass here than the Elear. When I put on dubstep, there's plenty of clean, deep bass where the Elear clipped and distorted. Listen to "Blue Sapphire" by Cimm to show off the CX's low end.
I have heard that burn-in is a requirement on these, but I cannot attest to that as I bought my CX used. Some users report that the sound is best after 200 hours.
Some notes on my experience with the tuning and ear pads: I wish the ear pads were thicker or angled because a bit of my ear touches the driver. This is fine with the black foam pads, those are soft and cushy. I really like the sound of the black felt combined with the black foam; too bad the black felt is stiff and uncomfortable. The two white felts sound nice they tame a bit of sizzle in the highs but the bass sounds a touch looser. The two-notch white with black foam is a popular combination but this blunts the sound too much for me. I like a little bite and crispness. Overall, I listen with only the stock black foam more than the other tuning pads.
I use a Schiit Magni Heresy with a Vivo cable. Heresy is plenty of amp for the CX this combo sounds spectacular.
What I like best about the CX is that it is a closed back without sounding overly bassy, boomy, or muddy. It's got enough isolation for the office and sounds clear, crisp, and dead-flat neutral. Hope this helps!
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