I have the Aeon 2 Noire and Ether C on loan now. I had the D7200 to and it had a vs against the Kennerton Magni that I got at the same time and lost that due to being to soft and polite. To similar to keep both but in the end it was a no brainer what to go for.
But I did like it quite a bit just the Magni that blow me away with it´s dynamics and drive when called for. Just engaged me so much more into the music as it can really explode in the fortissimo parts and still make good of the pianissimo parts. Not talking about bass but everything that is supposed to let loose let loose on the Magni more then other headphones I tried.
Aeon 2 Noire share a similar frequency response but it also falls victim to the Magnis dynamic capabilities though it certainly does have drive and a thump even. Ether C I am able to get closer still in dynamics. Sound quality I would say they are better then the Magni though even without filters particularly the noire feel almost overdamped. But maybe it´s just the pure studiosound I am hearing. But tbh at this level pure sound quality is the least of my concerns for enjoying music. I am using an old budget receiver from the speaker tabs for my magneplanars just because they sound better and more open despite not a pitch black noise floor and I bet more distortion my ears don´t detect anyway.
I don´t really understand though. Some of my headphone amplifiers output 5w which should be enough. And they still sound great and high volume on lesser powered amplifiers but this like the LCD-2 just openes up so much more when giving 50W??? Of course volume level on the receiver is close to mute. SPL metre don´t suggest I am fooling my ears by listening to higher levels either but magneplanars often feel like they want to compress when you try to increase volume to much. Particularly the Hifiman Ananda was a dynamic disaster.
Noire and Ether C can still rock. Suggested their V-planars don´t suffer as much from this and I can buy that plus being helped by the closed back too. Actually like the Ether C so much I am planning spending twice that I have ever done on a headphone. I really need this isolation though that is key otherwise I would just be a happy camper with the Magni. I can hardly ever use my HD 800S due to lack of isolation. I have not made that comparison yet but the detail retrieval with the Ether C must be really freaking close.
Getting the point across with the music, movies, games etc is more important then pure sound quality though.
As for JVC there is of course the DX 1000. Not the most capable headphone technically but great soundstage, easy listen, good bass but you have that already. May not feel like an upgrade to the D7200 besides the soundstage department.
If anyone find a headphone more dynamic then the Kennerton Magni please shout. Not in term of bass TH-X00 blows more sub bass then I ever heard in a headphone but boy did it fail to integrate the bass. I am certainly looking at the harman target a lot now it makes a lot of sense for my ears