What do you mean with ML slave rooms?I no longer have any ML slave rooms.
Quite impressive 9 BLC!
My predominant system is NL/B&o ControlLink with 4 BLC all set as ASlaves with a total of 4 ML Audio systems connected 1 BS5 Encore and 1 BG4000.
So there are no speakers connected to any ML/older product. That way one have almost complete control of the ML Audio systems in the NL/B&o Controllink environment . As explained before I can choose the CD to play on a BS9000.