No, I don't. Where I have my doubts is at low(er) volumes, say up to around 80dB. Shutdowns are patently, provably the case with higher volumes, as both you and he showed. Presumably distortion occurs before those shutdowns.

What I also know (from my own experience) is that audio memory is remarkably short--on the order of seconds. Instant switching is the only way that one can trust one's ears--and brain.

I am the Doctor, and THIS... is my SPOON!