So much depends on your system. I A/B’d a Schiit Bifrost 2/64 ($800) vs. a Holo Spring KTE ($3k) in my system. Same cables, everything.
And while the Holo was better -- soundstage and presence, especially -- it was maybe a 3% difference.
I make this point only because I would expect a much bigger difference -- and I’m willing to stipulate that there could be a difference. But my system won’t reveal it. So, for my pocketbook, it’s not worth the expenditure.