You've never heard of anyone winning a world championship in IASCA SQ with an RF Amp?
You keep discussing competition. If you're correct, why does Richard Clark still hold his $10000? "Oh, well that's not a sound test, he bypasses the features of the amplifier". That's correct, he does. Just like any SQ competitor worth a grain of salt does with outboard processing. Several of my friends are electrical engineers, and there are several on this board. Do you hear a difference between varying fets? What about all this talk of T03's and the TRU boners going around, do you hear that? Nope. And if your ears can distinguish between an amplifiers with this componentry, go and collect you $10000. Does amplifier A sound different than amplifier B? Nope, unless it's not solid state or it's broken. An amplifier serves one purpose, and one purpose alone. If it does anything other than amplify the signal it's broken, and no SQ competitor would use it. But then again, no SQ competitor is going to use an amplifiers onboard XO, Phase adjustment, Bass Boost/EQ unless they dont' know better.