I'm not an electrician; I have heard any 120 volt duplex outlet can be adapted to provide ~ 240 volts by strapping the 2 x 120 outlets together to provide 1 x 240 outlet. Search it here or google it. Then use an isolation transformer--the best are balanced--to give clean ac.
Can US 220v be used to power foreign 220v pieces?
I googled the above with no sufficient answer for audiophilic equipment. Anyone here with experience using a domestic 220v line to power an overseas sourced 220v piece? If so were the results sonically successful ( no humming, etc) and were there any equipment malfunctions?