iimig: The Denon AVR-5805 is basically 2 a/v receivers in one. It is capable of powering 7.1 in one room and 5.1 via preouts and external amp in the other. Volume and sources are independent for the rooms. The AVR-5805 is a beast, but also a failed experiment. I have found no other receiver capable of doing this. My suggestion to the customer was to replace that receiver with two separate receivers. Are the Marantz receivers able to be programmed via the computer? If not, are they easy to setup? I can't stand receivers that are not user friendly!