Contact your manufacturers to see if it is easy to change to 220V, especially for your amp as high current transformers are expensive. Buy a high quality transformer for all your other equipment. The 220v is single phase (hot, neutral and sometimes a ground). In France there is often only 2 holes for household applicances. Buy a Radio Shack polarity checker and wire the transformer so that the US standard outlet checks correctly with the tester. Mark the plug of the transformer to insert it ONLY this way and do not use it on any other oulets without checking for correct connection. You will also need to do this for computers. Your TVs are worthless in Europe. Also DVD players will be a different norm. (You can carry yout TV and DVD player and connect it as above but you will ONLY be able to play the DVDs you carrry with you.)
