bekim99:
A receiver is a" all in one unit"....Preamp with pots for attenuating loudness and controls for tone.....tuner..... amplifiers....and switching devices....all wrapped up in a shiny black box. Some receivers have "preamp outs" rca jacks that will bypass the internal amplifier section so that you can use more powerful amps if desired.
The receiver you have now does not have any Pre amp outs....which means you cannot bypass it's internal amp and route the signal to an external power amp....
I'm not sure what you are trying to accomplish...your speakers are relatively efficient so buy going to say a 200 WPC system you would gain headroom but only a few decibels of "loudness".......
That yamaha is 100WPC but granted not all seven channel at one time, but rarely are you going to come into a situation that all channels will require full power
you can look at the big box stores and find many receivers that are 200+WPC or if you have the budget to do "seperates" i.e. dolby digital decoder, preamp power amps, be ready to drop $4000-$6000 minimum .....
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