There are not much choices here. I got this RH1 from ebay. Of course, there are many guys selling RH1 but most of them do not send the item to my country. And in addition, I don't know that there is the 'Volume Cap' with the Europe version. By the way, thanks to everyone, I have successfully uncapped my RH1. And I can not perceive of any difference. (?) Maybe I have to concentrate the listening more because I just have it hacked just now. Thank You