I have T+A DAC8 and I used xtr-lp for long time with DSD512.
Recently I got a new GPU (3090) and I can do sinc-LI which sounds amazing.
I can do sinc-LI + EC7v2 in DSD256 but I prefer sinc-LI without EC (can’t do it with my CPU) in DSD512. I think DSD512 is still the sweet spot for this DAC even if I can do use EC with DSD256.