Well, in the end, more than one and a half years after my ill-fated attempt to order an Emotiva XPA-7,Gen.3,(they had problems with customs over CD players in 4 shipments from China), I've decided to give Emotiva another chance, and hopefully, they'll be able to supply the product. I've decided not to worry until two months have passed. I think that's reasonable.
A YouTube reveiwer who reviewed the XPA-7,Gen.3 and encountered slight hum and/or buzz also reveiwed Emotiva's new 2-channel differential amplifier and also encountered the same problem. I tend to think it's a grounding issue,perhaps using an excessive length of high impedence cable (he was using the phono connections, not the low impedence XLR connections, which are more compatable with a longer length of cable..)
