As the title suggests, I’m curious if anyone is using Roon to upsample with their H590, and if so what are you upsampling too and what difference are you hearing.
I have a H390 and tried various DSP in Roon and also in my Lumin T2. In all cases I preferred the sound when there was no DSP involved - more “natural”. H590 and your ears may be different of course, but it sounds so damned good as nature intended 
. If you do experiment, do report back your results.
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This is exactly my experience. Over time, I tried several times to use DSP, with three different DACs, and the result was the same. This happened to even the simplest form of DSP, volume leveling (which I wish I could use).
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