I've recently bought an American Gallein Krueger 1001 RB-II on ebay. It runs on 120volts / 60Hz. I've live in Australia and need it to run on 230volts / 50Hz. Could anybody tell me what would be the best way to make this happen? As far as I can tell it would be cheaper to buy a step up converter than to get the amp modified. Are there any downsides to running an amp through a step up converter?