How to use an American 110v electronic devise in Europe that has 220v power source. If there are questions leave a comment or e-mail us at [email protected] 110v to 220v American to European Plug adapter- http://astore.amazon.com/domesticeng01-20/detail/B0036VJ1OQ Transformer- http://astore.amazon.com/domesticeng01-20/detail/B0022TL1BE 220v to 110v European to American Plug adapter- http://astore.amazon.com/domesticeng01-20/detail/B0037AGZIG Transformer- http://astore.amazon.com/domesticeng01-20/detail/B0022TL1BE