If you can follow instructions you can assemble your own dedicated ROCK server. Mine cost about $600 not counting the price of Roon. The OS is free.
https://kb.roonlabs.com/Roon_Optimized_Core_Kit
If you use Roons OS you don’t need a streamer just an endpoint. Some DACs can be endpoints if the DAC you like isn’t all you need is a Roon bridge.
In my system I have a NUC running ROCK connected by ethernet in my home office. My ripped music files are on a drive connected to the NUC. In my listening room I have a raspberry pi4 running Ropiee which is a bridge connected by USB to my DAC. I control it with Roon app on tablet.
https://kb.roonlabs.com/Roon_Optimized_Core_Kit
If you use Roons OS you don’t need a streamer just an endpoint. Some DACs can be endpoints if the DAC you like isn’t all you need is a Roon bridge.
In my system I have a NUC running ROCK connected by ethernet in my home office. My ripped music files are on a drive connected to the NUC. In my listening room I have a raspberry pi4 running Ropiee which is a bridge connected by USB to my DAC. I control it with Roon app on tablet.