$1,400 seems like a lot of money. I am old-school DIN 45500 educated person with 50+ yrs of audio experience and I have a nice arsenal of inexpensive/expensive gear. Money should be spent on loudspeakers, turntables, DAC's. And NOT on cables, power outlet conditioners and all the other (often snakeoily) gadgets, that might make 0.1% sq improvement. How does one measure the sq improvement/expense ratio anyways?
If a $1,400 digital interface makes such a dramatic difference, then my first question would be, what else is wrong in this particular setup? "Wrong" might be too strong a word here, perhaps "mis-aligned" would be more polite.
Going back to the original post, my second question is: What problems are you trying to solve with this $1,400 expense?
Cheers and happy listening.