Pre/Power amps and voltage/frequency input

[G_urr_A]

I've been thinking of getting myself a preamp, and (maybe) a poweramp. Now, the thing is, I'm not exactly overly rich, so I'm looking for used equipment, and it's very difficult to find used equipment of these sorts here in Sweden. So, what I'm wondering is whether or not a preamp made for the US market would funtion properly if fed with 110v *50*Hz, instead of the 110v 60Hz which it was originally intended for. (Or, really, what I need to know is if it operates on AC or DC) The transformation from 230v to 110v is not a problem (as far as I can see, that is), but converting from 50Hz to 60Hz is a lot more difficult.

[JohnnyG]

The difference in frequency shouldn't cause too much trouble.

as far as i know all amps will convert the AC mains voltage to a DC voltage for use inside the amp. because of the way this is done it shouldnt make too much difference

if you plug it in and it blows up then it was probablly somehting else lol