So if you already have a SPDIF coaxial non-USB DAC and you want to stream, I agree with the used BlueSound Node 2i. It’s reasonably inexpensive, only has SPDIF coax out and you can stream a multitude of platforms through it. If you want Roon, then do yourself a favor and build an Intel NUC with better than the minimum specs per the Roon ROCK info at Roonlabs.com. Buy the NUC, RAM and M.2 SSD on Amazon. Install Roon ROCK on it and try it out. That could be your Roon Core. If you want buy a linear power supply for it. Then get a one year subscription to Roon. You can use Roon remote on your phone or iPad. I suspect that you already have the headphone amp and or preamp/integrated amp and speakers covered.
