Being from Australia I was not going to purchase this online from the US based on the 120V operating voltage. In Australia, its 240V. I belive the frequency is the same but in any case. I have recently heard that at the back of the Yammy, there is a switch which enables tbe use of the receiver using both voltages ... is this correct? Also as a side note I was thinking of downgrading my receiver choice to the HK AVR330 but my friend who works for a surround sound place advised against it based on their reliability. What do people think?