At the moment, Roon 1.3 does not support direct up sampling of DSD to a higher bit rate, for example DSD64 to DSD128 or DSD256. It needs to convert to PCM first then do the up sampling then convert back to DSD. To me it sounds bad, I prefer to playback in its native form. I was told by Brian, future builds will have direct DSD up sampling. At the moment, direct up sampling of DSD is only supported in HQPlayer. I’ve posted this in another topic.
https://community.roonlabs.com/t/dsp-up-sampling-features-in-roon-1-3/19293/185