Alternatively, if I utilised my Meridian 504 and 506 connected to the 218 via a hitherto unused AC12, is this sufficient in using an MSR2?

I’m content to use IP control.

Why use an MSR2? Technophobe Wife.

Not an Actor, nor married to Jamie-Lee Curtis.

#1: DSP5200SE|DSW.2|218|210|506.2|504
#2: Prime/PSU|SOtM sMS-200 Mini NEO SE|Focal Stellia
#3: Other stuff