This will work well if you set things up as mentioned above. Be sure to set Aux (Sooloos) as the only valid source on the 818. That way it will only power on if the Aux/sls key is pressed on the MSR. The only other caveat that is purely cosmetic is that the volume level displayed on the 818 and the speakers won't match.

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#1 Trinnov Altitude 32-8-16, 271, 8000XE, 7200SEHC, 7200.2, Seaton F18, JL Fathom F113, Revel w990's, Kef R7, ATI 528 Amp, JVC RS4100K, SI screen. Roon Nucleus+, Eno AG, Eno M link, 218.
#2 Mark Levinson No5105, Ayre VX8 and CX8, Vandersteen Treo CT, Preamp varies.
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