In this case, that's exactly the way it works. I'm not speculating that zero feedback amps don't sound different from, or even better than mine. All I'm saying is that the grievous symptoms of negative feedback described in this, and quite a few other conversations, don't exist in my current systems. Are they "brighter" than a system with one of Ralph's amps? Maybe. Without a measurable difference to determine which is more faithful to the input signal, that would just be a matter of taste and perception anyway. But according to the conventional audiophile wisdom (CAW), I'm supposed to be irritated, experiencing fatigue, driven to turn the volume down, driven from the room. None of that is happening. I listen happily for hours on end.
That's all I'm saying. If I listened to my actives powered by four zero-feedback tube amps, I may like them better. Or not. But it wouldn't change any of the above.
Tim
This is definitely one of those things that you don't or can't know until you've actually tried it. Right now- you are happy and maybe that is for the better, not finding out what is possible. FWIW though its a pretty good bet that your current speakers are not well-suited for zero feedback amps (with the possible exception of the Ayre).