I keep seeing you say this... I wonder if the unit was ok.
I mean with my 1015 I can easily hit 120+db and with no distortion.
Very clean sound IMO. The distortion #'s are whats inflated.
I see some of the Yamaha's with inflated power #'s. And most certainly Sony crud.
As well some of the B&K #'s are overboard, granted some are under-rated.
Anyhow, I really think the problem is user error in this case....