Hi Raoul,
I also have a Rotel RC-1590 MKII.
I was not able to activate it in RooExtend on a RPI (so not rooExtend-Box). The extension I use, roon-extension-rotel, was not ARMv8-compatible at that moment.
I asked @Boris_Schaedler if he could update his roon-extension-rotel to make it work with Jan’s extension manager v1.x in November 2022. I don’t know if he got the time to look at this update and if he succeeded.
In the meanwhile, I am using his roon-extension-rotel on a separate RPI, and is works perfectly. I use it daily, and it is really perfect in combination with rooExtend volume-knob.
To check roon-extension-rotel, just go to (Roon Extension: Rotel Volume/Source Control ).
Good luck with it, Frank.
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