David, you may be misinterpreting the so-called "copy" feature on the Denon. First, as Dr. Kyriakakis has emphasized, it doesn't in fact copy the many adjustments which Audyssey makes and is just a "crude"(his language)representation at a few specific frequencies. Also, if you're implying that the 63Hz number shown is the actual response at that frequency, that isn't correct; it's the approximate change being made at that frequency, presumably because an elevated room response near that frequency needs to be reduced.

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Enjoy the music, not the equipment.