I use it as home headphones. Frankly, I was very surprised by how they present the sound: exactly the way I like it: neatly, allowing you to listen with pleasure and thoughtfully, with a clear division into instruments, with a lot of micro-details, while preserving the nature of the recording. The dynamics are excellent, as is the ability to convey the difference in the volume of a particular sound. As examples: 11 Dreams by Mercenary, which is difficult for most headphones, was eaten and not choked, giving out the whole picture, clearly spreading the sound of all the cymbals into layers, not drowning out the rhythm section with drumming and neatly isolating the vocals. Soilwork (Living Infinite, for example, and especially their last album, Verkligheten) has now realized that it is worth listening to only on them: on the same Sennheiser Momentum, they simply fall into a sticky mess with dominating raucous guitars and chomping vocals. M50X played them flawlessly. The most colorful synthesizer in Dance with the Dead - Her Ghost listens in the same way, which on the weak parts of the "verse" finally became distinguishable and elastic, and the guitar acquired the necessary aggressive roar. Sybreed is served as it should: cold, heavy and with the articulation of guitar synths. Toto - Stop Loving You sounds great: the drum membrane, like the bass pluck, unlike the Axelvox HD272 \ Sennheiser Momentum \ AKG K512 MK2, have found, I repeat, elasticity, and the guitar rolls, including those that sound after the chorus, are characteristic, very defined "analog" distortion-rattles. And that's not to mention something like Boney James with his amazing saxophone and great recording of instruments: it's really very difficult to get "unstuck" from the sound of the M50X.
As a very controversial comparison: in detail they resemble FIIO F9 PRO, only 20% more detailed.