Anyone runs Euro voltage power amp or integrated with transformer ?


There is some interesting 220v/50hz stuff. Transformer doesn't change frequency, though.
inna
I ran 2 Cayin integrated amps for several years on a cheap upconverter. Bought both in China so 220V 50Hz. No issues. Currently still running JL Fathom sub I bought in China with upconvertor. No issues. 
I've had no hum or any other anomalies. Still always kinda bothered me in the back of my mind for some reason. Tried to get them switched but nobody wanted to mess with it in my area.