Hello, I am from australia I ordered the rh910 from a US site because I wanted the mp3 capability - and because even with shipping, it was going to be cheaper than most of the hi-md models you can buy in australia obviously the problem is, that US power is different from AUS power - so I was wanting to know what the power rating on the AC adapter was - will I have to get a whole AC adapter, or will a plug adapter be okay i.e. is it rated for 100-240V? or is it only 100V?