Accuphase E600 voltage conversion

@imhififan Thank you very much! The link is very helpful. At least now I know the cause of the issue. 

@imhififan Just wondering if Accuphase E470 voltage conversion from 100v to 120v is same as E600? I'm thinking to give class AB a try as well.

I think E470 has different layout, if you can post a picture of the voltage selection board, maybe I can provide some help on the voltage conversion.

@imhififan Thanks following up, good to know the E470 does different in the voltage selection board, How about E480, is it pretty close to what E600 voltage selection board?