1) You can use two channel but bbe sure you set up the internal menu to let it know it's all coming out of two channels. I use one 2 channel for main speakers, and a 5 channel for the rest.
Recommendations on amps depends on $, speakers, room siz, etc. etc.
2) Only jacks on the back of power amp will be input - left and right - they need to be connneected to appropriate l-r outputs on the pre.
Recommendations on amps depends on $, speakers, room siz, etc. etc.
2) Only jacks on the back of power amp will be input - left and right - they need to be connneected to appropriate l-r outputs on the pre.