I had one that got so distorted so quickly that it was indistinguishable from pure static. I thought that was the usual manifestation until I got one that did it more gradually, sounding like nasty clipping for a few seconds before turning to mush. I guess it depends on the attack rate of the tune, assuming that the normalisation is a simple scaling.

Awaiting another beta,...
_________________________
Toby Speight
030103016 (80GB Mk2a, blue)
030102806 (0GB Mk2a, blue)