I’m running roon with a PC in a closet, and streaming to a Raspberry Pi 4 with 4 Gigs of RAM, and Ubuntu. ~ $150, fanless.
A little more if you add a linear power supply.
https://inatinear.blogspot.com/2019/12/mytek-dsd-and-ubuntu-on-pi-4.html
The shopping list and parts detail are here, though when I wrote it I didn’t know I was about to switch to Roon:
https://inatinear.blogspot.com/2019/12/ubuntu-and-logitech-media-server-on.html
A little more if you add a linear power supply.
https://inatinear.blogspot.com/2019/12/mytek-dsd-and-ubuntu-on-pi-4.html
The shopping list and parts detail are here, though when I wrote it I didn’t know I was about to switch to Roon:
https://inatinear.blogspot.com/2019/12/ubuntu-and-logitech-media-server-on.html