If you unit dosen't have a line voltage selection switch then you can get stepdown transformer to go from 240v to 120v. It will need to handel the wattage of you reciver.
I recently moved from America to Australia and there is a different in voltage levels ie.110 in America while 240 in Australia, I own a Pioneer Receiver VSX-D912 which takes only 110 volts, is there any way to change it to 240? That doesn't lose quality or even an adaptor does this lose sound quality, Help greatly appreciated. Thanks