Separate names with a comma.
Another one I just thought of: Donald North Audio
Eddie Current - similar to DNA above, tube amps
2 more that I know of
This is probably a thread that will get axed, because it will become an advertising platform.
For instance, how about ECP Audio and Beezar Audio? (amps and DACs)
Just an FYI, but the reason it became "Designed and Assembled in USA," is because some of the best components available in audio today are all of Japanese manufacture. Some are European, a few are still US. However, it is absolutely impossible to construct a high-quality audio product today without Japanese components (even if those components themselves are manufactured elsewhere under Japanese supervision) - if for no other reason than electrolytic capacitors.
lol...you can also start a Made in Japan thread.