Do you have any line conditioner? If not this is very important to start with. There´s a very nice trick in this months Fine Tunes in Stereophile (if you feel comfortable with electronics,etc). Maybe you ment volts not amps... Also look for proper grounding in your AC set up and polarity in each component by reversing plugs. Very cheap tester at Radio Shack for this. 110 to 220 volts wont be a cure for other more important factors you might be facing. For faster fingings try listening to your system late at night when AC line noise drops and air noise does as well. There are many tweak sites to look for starters look at Magnan home page. Good luck
AC Line Problems
I have big problems regarding AC line noise. I get alot of loud "pops" through my phon stage from appliances in house while listening to phono stage. I had dedicated line installed from the existing panel but to no avail. The house is only wired for 110 amps. Would upgrading to 220 amps help? Any suggestions? How can I determine noise which is coming in from the AC line versus noise which is airborne?