I compared side by side the setup of the MS200 and the MS600.
On the MS600, CD and SLS source configuration were set as both 4C

I changed it to match the MS200: CD = 1C and SLS = 4C

MS600 now wakes up the system from the Roon app on my phone.

Cheers


Jerome
Music: NUC + ROCK + QObuz > MS600 > G65 > DSP8000SE + DSP5200HC.SL + DSP5200SE rears
Movies: Apple TV > HD621 > G65 > DSP8000SE + DSP5200HC.SL + DSP5200SE rears