Hey ADTG, apparently S&V/HTM reviewed the 4520ci, did your copy in the mail yet? Not sure if it is true but reportedly the bench tests show outputs at 0.1% THD are about the same as the 3808/4308/4310/4311, that is around 230WX2 4 ohms, 120WX5 8 ohms. If true, that's pretty impressive in terms of consistency, despite the weight drop of 5 to 8 lbs, another proof that weight is a good indicator but only up to a point.