ROON does not need a powerful box to run. I was at one point running 4 ROON Zones with 2 of the zones running DSP in the ROON Core (Convolution files). My cheapo machine handled it perfectly. I have had no issues for years though in the last 2 months there is something going on in my home network that is causing ROON to stop on occasion. Which requires me to click the PLAY button on ROON.
I do see a pattern of how this happens, and I doubt most users would run into the same issue as me. My network has a lot of activity going on and I need to investigate a solution for this. Should be fun. This has no bearing on the type of hardware that ROON is running on.
One way to minimize (or eliminate) the effect of a cheapo ROON machine messing up your DAC with network noise, is to use Fibre Optic cables just before the DAC. I use a Sonore OpticalRendu which takes Fibre from this network switch.
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It then converts it to USB and then into my DACs. The last conversion to USB is not ideal since that could be a little noisy but none of my DACs support Fibre directly (all have USB). The 3 DACs that I know of that support Fibre directly are the Lumin X1, Lumin P?, and the new $40K Linn DAC.