I would just say fwiw and to stir your imagination:
In line with "small" (and low power), Bob - who started this thread aka rb2013 - has posted aka Tubelover2 on his other thread here:
http://www.usaudiomart.com/forum/viewtopic.php?f=35&t=1172&start=2910#p8666 and then here:
http://www.usaudiomart.com/forum/viewtopic.php?f=35&t=1172&start=2925#p8675 and then here:
http://www.usaudiomart.com/forum/viewtopic.php?f=35&t=1172&start=2925#p8686.
But then posts beginning here:
http://www.usaudiomart.com/forum/viewtopic.php?f=35&t=1172&start=2940#p8709 corroborated my own prejudice towards "clean and big" culminating here:
http://www.usaudiomart.com/forum/viewtopic.php?f=35&t=1172&start=2940#p8713.
PeterSt Quote begins
Yes, the more powerful the PC, the better the sound will be. This has always been the general consensus, and in 100% of cases where people thought they'd be good with their laptop or other "mini" system, they had to admit they were no good at all, after finally implementing the hefty desktop.
General consensus too is the more processor cores the better, and what's fairly standard by now is 20 core hyperthreaded Xeons. But mind you, without anything further in that cabinet, and preferably fully powered by a linear power supply. So no fans, no disks, no SSD, no USB connected stuff and also no SD. Nothing. Only LAN and the music stored somewhere there.
And regarding NAS ideas : Might that be beneficial in the first place, then try to envision it is not about any peripheral which doesn't spread noise to your precious Audio PC; it is about the Audio PC being able to run lean. Run evenly (no spiking).
PeterSt Quote ends
Mine is now a simple CPU/PCIe loop comprising only o/s and music on an Optane PCIe AIC together with a PCIe Ethernet AIC. They sit on a quality mobo, and a decent LPS supplies everything. I am not so much wishing to taunt you as to explain that Bob seems to want to expend his (most worthwhile and educational) efforts downstream of the PC, whereas others (including me) are just as interested in the PC itself. The difference is partly a matter of personal philosophy - not right or wrong as it were - and I am just urging you to identify yours - personal tendencies that is - for we audiophiles all suffer from a dreadful and obsessive disease of perception - so that you may tread a consistent orientation henceforth - so wasting less time and money in the long run.