Uhhhh, are you running a 115v PSU (or a PSU switched to 115v input) from 230v? This is a bad thing, the voltage may be higher, but it might be *too* high and could possible cause problems with your empeg.

As long as you have a REGULATED >1A at 12v you should be ok. A lot of cheaper PSUs won't manage this sort of current, a switch-mode one is ideal.

Hugo