Hi

Any Sooloos Core/Store combination can be used with an ID41.
So yes to the MC200.

However, the MS600 is a Sooloos Source (Audio Endpoint) and thus would not be used with an ID41 card, unless of course one wanted a second Sooloos zone for an independent system in another room.

Regards,
Carl

861v6+ID40, HD621, 8000.2, 7200HC, 7200.2, SKYQ Silver, PS3, PDP-LX6090, QNAP TS870-Pro (8*6TB), Roon, iPadAir2.
[In Reserve] C15, MD600 (2*3TB), TwinStore RM (2*2TB)