Rick, discussion similar to the two replies above has taken place quite a few times over the years here. The published Onkyo specs clearly(more clearly than many others, in fact)state the two channel driven basis for the rating. The HT Labs test on that basis(which you didn't quote)show that the spec was met. Those who don't study what is meant by a power rating have no right to use their own interpretation of what it should mean.

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Enjoy the music, not the equipment.