How many rooms and speakers do you want to hook up, might be better going for 2 AV Receivers if its a lot, just noticed you are Ireland, so potentially you could buy this one instead, the other one isn't available in the UK and Ireland...
Zone 2 would take power away from the main zone so that would be 5.1 channel and 2 channel for zone 2, from the manual.
Intelligent Amp Assign automatically assigns amplifier channels to certain speakers, depending on what functions are selected. For example, in a 7.2-channel system, when Zone...
As the owner of a Yamaha RX-A1010 i have been converted into a fan of their amps, i think there are many models within the $650 budget that will fit your criteria but i'll put forward this Yamaha amp below, don't buy into the watts output, every brand exaggerates the power...