Why I like the LCD-X:
Let me start with putting my post into context.
I will try to be brief.
I listen to several different music genres from vocals to classical, but my main music is electronic ambient (60%). In this genre bass extension, layering and clarity is absolutely mission critical. Also bass punch and impact is very important, more so than with other more popular genres.
I have been in this hobby for a few years, I owned and auditioned god knows how many headphones and amplifiers from entry level to TOTL. The most expensive combo I owned (and loved) was the Empyrean with the TT2. I reached this high-end combo from a modest Mojo/Nighthawk setup in just three years. It has been quite a journey with a lot of auditions, selling and buying. I enjoyed every moment.
Context over, this would be my experience:
So, what is the reason for this post? It is because in my experience the LCD-X with the right setup might be better for electronic music than some much more expensive TOTL combos. In my experience the higher up you climb the ladder from around £1000 let it be headphones or amplifiers, the less improvement you get for your money. And the biggest improvement you actually get is more realism/lifelikeness. TOTL gear just sounds more lifelike/real. Like you were really there at the recording. I would say this is the number one quality of any TOTL gear. I admit, this is extremely important with live instruments or vocals, but less crucial with electronic music. With electronic music you need good extension, good clarity, layering and some good bass punch.
I tried many TOTL headphones and they were awesome, but none of them offered the bass extension, bass energy and punch of Audeze headphones (from LCD2 to LCD4) which I enjoy so much. I actually prefer the Empyrean to the LCD4 and HE1000V2 for its naturalness, but even the Empyrean is unable to offer that punchy Audeze bass (although it is not bad). Not to mention, all these TOTL headphones cost a fortune.
I think the sweet spot of price performance ratio on today's headphone market is around £1000-£1200. The Clear, Aeolus or LCD-X are much better than the Elex, LCD2C, Sundara or HD650 and they are actually not light years away from Utopia, LCD4, Verité. Differences are of course subjective, depending on budget, hearing and preferences. But, while the improvement from a £500 headphone to a £1000 one is quite significant, for the same upgrade you have to put down another £2000 at least.
This post is already getting too long, so I won't go into details regarding the importance of proper equipment pairing. It is extremely important though. I see too many posts when folks think they can drive 1K+ headphones out of a $100 portable player, it literally hurts reading these comments.
Back to the LCD-X. Yes, it is advertised as easy to drive, and they are definitely not hard to drive. But they still need something better than a portable player or the most basic desktop setup. The X can scale too! Sure it is low impedance but still the biggest planar transducer on Earth (imagine David Attenborough's narration here)!
I run my X out of ADI2 and I admit I quite like the loudness function which slightly elevates bass and treble depending on listening volume. I also add 0.5db bass when I listen to electronic music. Even such small adjustments on the ADI2 can change the characteristics of the X quite a lot. The X can be very neutral and transparent, but reacts very well for even the smallest adjustments. The very slight adjustments I use with my ADI2 colours the X to a small but very enjoyable extent.
I really like the LCD2C, but compared to the X the 2C is just 'more headphone like' instead of 'lifelike'. Details and clarity are just not on the level of the X. With my small adjustments the X gets a bit closer to the 2C's warmer tonality, while maintaining the superior level of detail/clarity and punch. Pairing and potential adjustments are important. With less ideal setups the X can sound boring and lifeless. With the right setup they can sound sublime. I would also like to point out the importance of bit-perfect sound and the improvement you get with the Audeze reveal plug-in.
The X is pretty good with any genre, but IMO excels with electronica. For this sole purpose I don't think there is a better buy out there at the moment. The X offers enough of the high-end realism that makes it a worthwhile buy over the LCD2 or LCD2C but still maintains (and improves!) perfect bass that Focal or ZMF dynamic drivers can't even touch. Sure, the Aeolus for example will be better for jazz. But our focus here and now is electronic music and bass. Not to mention, the Aeolus for example needs more serious amplification than the X does.
My final point is, if you are (mostly) into any kind of electronic music the LCD-X with a relatively decent DAC/amp (like the ADI2 for exapmle) and with some potential adjustments might just be your ticket to (electronic) audio bliss.
Sure, TOTL headphones sound better (I mean much more lifelike) in comparison, but with electronic music you don't need that extreme level of realism for another 2-3K.
The X offers enough realism compared to all sub 1K headphones to make the upgrade worthwhile and at the same time the X gives you the electronic bass performance that can hardly be found even amongst flagship headphones.
Another reason for this post is that this is a very good time to buy the X if your preference matches what I have just described. The creator edition still exists and you can get even better deals second hand. LCD-X for 7-800 beats most headphones between 1-2K when it comes to bass performance. Combined with a good DAC/amp you can get the perfect electronica/bass performer for 2K and for this sole purpose this might be more enjoyable than some other 4K combos.