Twincam
Dont buy the apple one, your current lil white converter does 240v, the only thing someone like ubertec will sell you is the "world conversion pack" which changes the plug bit that pops out, pop the US one out and look at the connector under it... I managed to find an old cord that went from NZ power plug to some other random converter, plugged it in, worked a treat
Happy listening!!

(GU026 copying on to mine now... SHHHH!)