Sorry I made a mistake . In the various hidden (there are so many !) RME menues , (if you are in USB mode) ,you have to aktivate
DSD detection : on
DSD direct line : on
DSD Filter : on (50kHz orb 150 kHz).
And now the spectrum analyzer and level meter turns into blue colour (it still works !) but now the other functions (Volume a.o. ) are disabled. So it works with DoP as it is supposed to do.
Nice side effect . With the RME- ADi 2 pro : via USB the SPDIF inputs can even record not only PCM but also DSD.
Remains : DoP works in the settings controlpanel , DSD direct is extremely dangerous , the hiss can destroy your speakers. Maybe Steve can have a look on it.
Sorry for my english (not my native language)
Best
mine (with regards from Germany) Donation done.
Does DoP also turn to silence if you slide the volume away from 100%?
Additionally be careful. When I use DoP and I put the volume slider at 98%, the music turn into the same hiss as the raw stream. Only if I slide it lower, the DAC turns into silence, showing the PCM kHz. So in my setup the volume changes have some weird effects on DoP. Volume should be disconnected internally. You still want to be able to set it if your next file in a playlist is PCM, but it shouldn't bother DoP. In Foobar you can still slide it, but it's being ignored. EQ, DSPs, fading options etc. might all be a problem.
Another observation with DoP: if I turn on any of the visualizers, the music starts to speed up.
In the raw stream mode, the file doesn't progress at all. It just gets stuck in the first second, despite the noise being continuous. So I wonder if it's some kind of timing problem.