Micro Seiki RX-5000 - All Switchable 110v & 220v?

Hi,

Would you know whether all the RX-5000's came with the ability to switch the voltage between 110v & 220v? Or did they come with only 1 voltage for each market? The user manual on vinylengine simply states "Power requirements AC 120V (60Hz) or 220V (50Hz)". That implies switchability to me, but maybe this manual relates to an international production run and they made 110v specific units for Japan? I want to buy a unit which is currently located in the US but the seller says that it only works on 110v. I need 220v.

Any help would be much appreciated.

Happy listening.
Bluewolf