Being from California, I like to keep it close to home. Actually most of my main system is also from California. Pass Labs Preamp and Mono blocks. Magico speakers and Synergistic Research cables. All good companies all relatively nearby.
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.