I have a Denon 4802 that I'm very happy with. I have been thinking about using the 4802 as my pre-processor and adding a new separate 5/7 channel AMP (like the new Outlaw models.)The Denon spec sheet mentions that the 4802 has "7 Channels equal power amplifier section." If I use the amp to power just the front and center speakers, does this provide more/additional/reserve power for the remaining side and rear surround channels? or is ther a separate "independent" power supply in the 4802 for each channel?