John,
I think the point that is being missed is that this particular Denon has four separate amplifiers that can be dedicated to the front speakers.
Two of these amplifiers are the usual front L/R and the other two are the rear L/R that can also be configured as fronts.
So the first two can be connected to the L/R woofers. The last two can be connected to the L/R mids/highs.
Each of these amplifiers has the capability of routing 130W to each channel. So the left channel will get 130W for the woofs and another 130W for the mids/highs. Ditto for the right.
Since each speaker can now get 260W, that's a total of 520W for the fronts. That would give me 30dB of headroom. And a full 24dB when I get crazy and decide to crank it to 1 full watt per side
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