I’ve decided not to worry about a new surge. It was the first one I had in my house in the 50 years I’ve lived here.
I’m keeping the speakers plugged into the wall.
I’d most likely do the same thing in your shoes, given the particular chain of events you’ve described.
At the same time, I have to admit I’m curious as to why Golden Ear replaced the amp for free if the problem was with the Furman...