For me:
Apogee Acoustics - U.S
SoundCare - Norway
BAT - U.S
Audiolab - UK
MHDT Labs - Taiwan
BlueSound - U.S
Symo - Swiss
Silnote Audio - U.S
Wireworld - U.S
Made in USA
I love to support USA products as much as I can. Even if it costs more. Id say 2nd choice Europe or Japan. Last place China.
So USA made HiFi products I have are... Magnepan, Odyssey, Geshelli, Rythmik, Schitt, Bluejean, Belden, Analog Productions( vinyl). Musichall & Monitor Audio (UK), Nagaoka, Magomi(Japan),
Other USA made HiFi I know of.. Kilpsch (high end speakers), Jeff Rowland, P.S. Audio, Emotiva?
Im sure there are more. Please continue list and lets support our own.