Holy shit. I'm glad to hear you're doing better, but hearing these types of stories really reminds me to be mindful and treasure the days when everything is good.
GratuitousAlgorithm
It sounds like you want a non-reference type headphone.
The bose QC45 by a mile. The wired open back headphones I own are OK, but fir comfort they are not in the same league as those Bluetooth ones.
If you're on your laptop just use PEQ and smooth out the 7.5kHz and 12kHz peaks.
Watch your caffeine & sugar intake and lack of sleep. All these can magnify your tinnitus. And don't focus on it.
Its buggy as fuck and ive given up hope they will ever fix it. I still pay for amazon music unlimited, but it's only because I've spent so many years building my playlists and I'm too lazy to try and export them to a fully functional service. I also use Qobuz and Tidal occasionally. But my thoughts on amazon music are that they have the same philosophy as they do on their Amazon Prime video apps. That app is also dog shit when you compare it to others, but Amazon don't give a fuck about making it better, coz why should they?
I totally agree that everyone interested in this should do some blind tests. But, isn't it also true that blindtests also show us how abysmally shitty our memory for details in audio is? It's just a few seconds before we start forgetting, right? So it's a good experiment for us and is definitely worthwhile, but is it conclusive? Personally, I will never spend much more than £50 on a headphone cable, but that's more to do with just wanting a good quality product that also looks nice.
As someone who has owned the Sundara and still owns the ifi dac and also a Qudelix (and also a fiio K7), I can confirm they all sound great and you will be very happy, especially with the utility of a Qudelix.The bass button is extremely useful on the ifi, but obviously it's not portable. All in all, it's a good choice either way you choose!
You get used to it. But it feels like pressure.
Its deliberate. K7 is designed like that, to be used in the area after 12 o'clock.
We have even more in common than that, also have a 702 & x2hr same as you but only the two headphone stands :)
On my XS I had the same odd resonating buzz on certain frequencies, too, but it was only noticeable when I did the frequency sweeps headphone tests. I gave the drivers a few gentle blows, which almost fixed it! (Another redditor suggested that). And after week or so of use, it went away completely.