Mac mini. I have a dedicated Mac mini in my audio system with no attached disks, 16G of ram, and 1 of the best USB cables hooked to an external dac. My music is stored on a Seagate 5TB NAS central disk that I connect to it thru the wired network. I run my Mac mini headless, you don't need a monitor, keyboard or mouse, I use screen sharing from another mac or from my iPad using parallels. I actually rip my music using XLD from another mac onto the seagate NAS drive (itunes) so I can sync all of my apple devices to this iTunes repository of music. I use audirvana on the audio system Mac mini, I don't use the iTunes interface, I use audirvana's, sounds better but more crude in the interface right now. I use the parallels screen sharing program to interface with audirvana. I also have many TB of disks to perform different types of backups.
As far as ssd, I don't see the need for them. I actually have TB of SSD storage and the way my system is setup everything runs out of memory which is many times faster than SSD.
As far as ssd, I don't see the need for them. I actually have TB of SSD storage and the way my system is setup everything runs out of memory which is many times faster than SSD.