It doesn't matter where it is made, but, building the amplifier overseas does keep unit of production costs down. The things that should matter most are value for your dollar, product quality, and customer service should the need ever arise. I know I like to bust balls about Korean and Chinese amps, but where it is made really doesn't matter as long as the product is decent and can perform as expected.
On the flip side, since there is little to no R&D these days AND we are starting to lose product differentiation as well as diversication, everything has become a name on a heatsink. I know I sound like a broken record, but this is fuggin AMERICA and I like having a choice dammit. I am getting to the point where someone's new and exciting product doesn't excite me because it is yet another Zenon built, "me too" amplifier with a different name on the same generic heat sink. I really wish they would change their minimum unit requirement because too many fly by night companies are going to start popping up... like.... *cough, cough* Merlon/Merlin out of Houston.