What I'm trying to work out is if I can get a Full Signal output to simultaneously feed another amp/speaker set.

Does anyone know what is being output from the Sub Out on the back (as I don't appear to be getting any signal at all.... or anything I can hear with a pair of Headphones anyway).

HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs