Are any amps made in USA?

I'm curious to know, are there any amps, or audio amplifiers, that are manufactured within the United States? I'm particularly interested in finding out if there are domestic producers of high-quality audio equipment that cater to audiophiles and music enthusiasts. I've heard of many great audio brands from around the world, but I'm specifically wondering about those that have a strong presence and manufacturing base in the USA. Is there a thriving industry for domestically-produced amps, or are most of them imported from other countries? I'm eager to learn more about this aspect of the audio industry and how it compares to international manufacturers.