Grado still manufactures their stuff here. Not "electronics" per se, but their headphone amps have some electronics in them.

In can be done. And it can be done cost competitively.

I know. I work in one of the few remaining semiconductor fabs in Si valley, and our costs believe it or not are still competitive with the Chinese fabs that come knocking at our door every year trying to take the business away from us. But we are a low volume, high performance analog/mixed signal house. (Digital is easy peasy, analog is more of an art.)