Easiest way to put it, what you are buying these days is most likely one of the following :
Full chinese
Korean style board Chinese made
Korean
Brazilian
If you buy an amp that is Chinese made, regardless of the brand, it’s going to be from the same few factories. This also goes for Korean amps, and Brazilian amps. None of these offerings would I consider even remotely close to high end. The Chinese made stuff is the lowest quality, the Korean amps are better but aren’t spectacular and are expensive. The Brazilian amps you can’t run the voltage low or they can fail and the onboard Xovers tend to be crap (if not using them this isn’t an issue).