Joe, if what you mean is that you'd run the Audyssey room EQ and then run the REW with the expectation of using its results to "tweak" the Audyssey EQ with the receiver's manual equalization settings, that can't be accomplished. The Audyssey EQ is entirely separate from the rather simple manual EQ provision and they can't be used together. It's either using the Audyssey EQ results or turning those off and using the relatively crude manual settings(or no EQ).

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Enjoy the music, not the equipment.