These new 5k-6k releases do seem to push into insanity territory on paper -- but then they always come with a 2200 custom cable made by pw or Eletech or some such. Meaning the IEM in there is still 3k to 4k. So I'm not
that bothered. It took a 1800 USD Eletech flagship cable to finally take my u18t to "perfection" for me (total price: 3000+1800=4800). And I went through 3 quite expensive cables to get there, so it's actually way more. To me, these new 6k releases confirm that cables are incredibly important for an IEMs sound. And when it comes to absolute TOTL, it's better the manufacturers provide a perfect-match cable to go with -- so you don't end up spending more on cable rolling.
Take this with a pinch of salt, however. I've sold my soul and body to Satan's Capital until the End of the World and can, thus, afford this new trend. When it comes to affordability, I'm part of the problem not the solution. I'd send myself to Siberia for correctional labour, but sadly I don't have the time -- I have too much "grinding" to do to be able to afford all this lunacy
Anyway -- do you have a link to the pic with the open back 64 audio IEM? I've searched the web and can't find it, and would very much like to be teased...
Also, what is TWS?