I will try to make my earlier post a bit more clear.
The Sony 997 could not supply 110 WPC with 7 channels driven simultaneously with only a 420-watt power supply, more like 60 watts.
This is where the all channels driven simultaneously are an important reference.
The Onkyo 805 with an 1100-watt power supply has reserve even at 130 WPC all channels driven.
Some manufactures like my older Sony probably allow for the front mains to receive 110 WPC but think you will use much smaller speakers for surround and center thus allowing only 40 watts for these speakers.
So in conclusion my older Sony’s power rating is misleading for it’s power supply can not supply enough power to the DC Buss providing power to the + and – of the power stage of the amp for 7 channel equal power.
It seems that our backgrounds may be somewhat similar. I have worked with ABB, Fanuc and Motoman robots in repair and interfacing for automation. I have worked in the industrial electronics field for many years in various capacities.
I think you will be quite pleased with your HT setup and I’ll bet you are tracking your Aperion order right now.
Regards,
Jack
BTW welcome to this forum.