Their amps have been made in South Korea for a few years now. I think they were only made in Vietnam for a year or two.Congrats! Good idea on using a small fan. I have been using one since Feb with a 100t, great mid size rig.
Now Ampeg has reissued an updated version of their v4b, but I still think fender current QC made in mejico is a lot btr than the current viet nam ampeg stuff.