Alright, i'm not sure i agree then. And my system uses extremely efficient speakers, so i'll hear the noise. It would rip your ears apart before you'd be bothered by tube noise. Also, and this may be the horns and maybe the size of the room, or both, but at a certain volume level, the illusion collapses, it gets shouty.
I'm after a more natural level, which could probably translate into some high dbs on dynamic peaks, but average listening level isn't super loud. The room just isn't big enough to crank it higher than I do anyway, at least to my taste. (Yes, I listen to some hard rock, but not at ear shattering levels).