In particular:
Nucleus Power Supply Poll - Roon Software Discussion / Nucleus - Roon Labs Community
to @Eric_Besemer there is absolutely zero evidence that changing the PSU on a NUC makes any audible difference to anything in any part of the audio chain. Lots of peoples anecdotal stories do not amount to factual proof.
If you don’t connect the NUC directly to your DAC via USB (eg you use network attached devices) then there is absolutely no sane reason to change the power supply on your NUC, the data passing through the device, doesn’t care how expensive your power supply was.