Ha 110V
forgot about that (and dont get me started on 60Hz either) - i suppose that if they want a US export model it wont be hard to change the plug and mains circuitry to handle the 110V..
Anyway i own a Yesico PSU myself, no hum, no whine, no noise at all, even when sticking the ear *near* it (it runs quite hot actually, esp. in my fanless setup).
I think other mfgers have similar PSUs, like Antec for instance ? I cant remember OTOH but you can dig SPCR. High power fanless PSUs are out there, they're not easy to find that's all