John: I guess that I wasn't clear. I am aware of the mathematical definition of RMS. What I was intending to say was that the FTC does NOT require that all channels be measured simultaneously, as opposed, to an RMS rating of ALL channels tested simultaneously. And, the Denon has the FTC spec, as required.

I still have to wonder how realistic that FTC spec is? Just can't seem to find any of the information that the manufacturers used to convince the FTC that ALL simultaneously was not a realistic requirement.

We have a lot of folks reporting improvements when they go to separate or additional amplifiers. Of course, we are not talking about double blind tests. But, if they really are noticing a difference, I would have to "assume" that their current gear is somehow power limiting. If true, it would imply that the FTC ratings are not sufficient.

The curious side of me wonders what is ground truth????


The Rat. M80s, VP-150, QS8s, SVS PC 20-39+, OPPO, Onkyo 703s, Harmony 880 Sony 60" SXRD HDTV