I have a Roon ROCK (NUC7i5BNH) connected directly via USB cable to my Sony TA-ZH1ES DAC/amp. The Sony is capable of decoding native DSD, but Roon doesn’t give that option, offers only DSD via DOP.
As far as I am aware, Sony USB DAC devices do not support native DSD when connected to a device running Linux based operating systems. The only way to play native DSD to a Sony USB DAC is to use the Sony driver on Windows.
Some manufacturers have gone to the trouble to make their product work natively in Linux. ROCK is normally patched to accommodate these so some devices will work natively. Sony have not done that work. And in their minds the effort required is disproportionate to the majority who use Windows or OSX.
I run two DACs right now, a PS Audio Nuwave DSD where that work has been done, at least to Sonore products, and an AudioByte Black Dragon where that work has not been done. I still prefer the BD via DOP to the PSA native.