So I got a dose of my own medicine...
My tech was asking me about a new psu build because the Chinese transformer label is confusing. And I was like, wait, how did you do the one I got now? So turns out while the dc out is fine, the way the secondary was wired wasn't correct, but functional.
The SQ of the psu was still one of the best I've heard despite this and I didn't notice sq issues when I had the Dave, diablo, Hugo 2, etc... As compared to the past couple of weeks.
It was when I got the new psu mod for the Soekris and SPL phonitor one that I was hearing issues with loud albums, limiters, which I've been posting about. While the Soekris and SPL combo gave an upgrade in sound, other issues started to stick out and I was blaming limiters, the limits of the Soekris r2r, and even the Stealth being too smooth and undistorted that it's making loud albums or with excessive limiters fatiguing for me.
So it turns out it was the configuration on the secondaries of the transformer. Those albums with 'limiters' has no issues for me now. Female vocals sounds faster, airier, yet sweeter and smoother while still displaying some rasp in the voice that was otherwise coated over in my last setup. I am now rewarded even more with the quieter albums with more DR as I can peer through the music even more and what felt like poor stacking/blending of vocal tracks is gone too. It was like a slightly wrung rope being relaxed.
I'm happy with this outcome because I believe at this level, the concept of synergy is not a thing.