To audibly hear a difference the power needs to double, so if you get the 3808, you will need an amp that is capable of 260W/ch to get a noticably louder system, not that you might not hear it cleaner at high SPL for the same amount of power, say an amp with 150W, since it appears outboard amps tend to have a little more headroom built in(lower specs than actual output).
Oh, that makes sense. I recall now the rule of thumb that you need to double the power to get a 3dB SPL increase. 3dB being what it takes for the average listener to notice the difference.
(Hey, JD over on the AVS thread, your repetition of this concept to me is FINALLY sinking in.)
