My opinion may be disputed, but I find a built for purpose real-time Linux OS to be a very good streamer. This must be a single purpose device.
Bitperfect MPD with ALSA for a Linux Audio PC System (24bit96.com)
These instructions are for Debian, but I use Ubuntu 22.04 and have found great results. There may very well be better streamers out there but the few I took apart are ... computers with Linux running. So I figure why not build it yourself.