Power Output @ 1% THD 2CH 8 ohms/ 2CH 4 ohms/ 5CH 8 ohms:
$3000 Denon 4810: 187.7/303.5/148.2<o
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$2500 Denon 4520: 190.7/287.1/145.3<o
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$2200 Pioneer SC07: 182.2/301.6/150.5<o
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Pretty good.
Insignificant difference on the power output.
Huge difference on the Audyssey XT32 + dual Sub EQ + DEQ.