Harmon Kardon used to be all USA made, but where bought in 2016 by Samsung, the Korean company.
I don’t know if they are all made in South Korea now, but they’re stuff was so good and older model might be a good investment.
All of my HK HIFI gear I bought in the 1970s and 80s, and they still work beautifully.
I also have the Bose 901 speaker system, made in USA decades ago.