Thanks Tinker, very interesting read.
I had some further questions but after reading this thread I can see that “integer mode” is an optimisation that can be selected in the Zone gearbox when Roon is running under OSX and a compatible DAC is being used.
“Integer Mode” appears to be an optimisation that affects all playback and is not limited to DSD/PCM conversion, which is the only place us Windows plebs see reference to integers etc.
Cheers !