My current setup includes a Denon 3803 and an Earthquake 3 channel amp. The Earthquake amp powers my front three speakers and the amps in the 3803 power the surrounds. If and when I get a pre/pro (several years away) would I be able to use the amps in the 3803 to power the surrounds by the using the ext-in inputs? At first I definately thought yes but now I dont know. Any help would be greatly appreciated.