I set up original format in settings, turned off ALL DSP processing in Roon Arc, it still converts DSD 256 to PCM. Even if it was working earliers just fine, reinstalled to the fresh version and it does not allow to play directly. My DAC support DSD512.
Finally, make option to just path thru DSD without conversion. All these settings are cumbersome to say at least.
I using iPad to stream from Roon server with Roon Arc.
DAC is LAiV Harmony.
When using fixed bit rates it shows that my DAC supports DSD.
So, software understands that.
Arc does not have settings to set native DSD directly.
I set original format in settings and turned off all processing on the audio settings page. Pipeline still shows as converting toDSD to PCM384.