Malickia. A transformer can work fine and actually give an improvement in sound. What you need to do is to get one that is totally over-spec. i.e. 10 times what your amp is going to require otherwise youll end up having the issues Semi describes.
An isolation transformer could drop your noise by 6db and if you have electronic savvy and wire your own, you could wire the secondaries so that you get balanced out.
Have a look at Bruce Rs power supply at http://www.transcendentsound.com/power_supply.htm. Hes is 110 to 110, but you could do something similar with a step down tranny.
Regards
Paul
An isolation transformer could drop your noise by 6db and if you have electronic savvy and wire your own, you could wire the secondaries so that you get balanced out.
Have a look at Bruce Rs power supply at http://www.transcendentsound.com/power_supply.htm. Hes is 110 to 110, but you could do something similar with a step down tranny.
Regards
Paul