Can a european amp version 240 be changed to us 120?


I Think its just a switch inside unit. 
emergingsoul
Post removed 
Actually, he/she needs a step up transformer. -120v to 240v, unless there is an internal switch.
B
The answer is sometimes.. 

is it a switch inside the unit? Likely not in most cases. Takes some re wiring IME, I have tried with several pieces. Ended up just getting a transformer.