There's a whole world of hundreds of quality American audio electronics out there. I created a page on my music blog dedicated to this: American Made Audio List | Windhaming
Just open Stereophile or The Absolute Sound magazines, or attend the Rocky Mountain Audio Fest and you'll see many many US-made systems.
As for me, my system is as follows
Preamp: Aesthetix Calypso, made in California
Amp: Audio Research Corporation, made in Minnesota
Speakers: Acoustic Zen Adagio's, made in San Diego, California
Cables: Acoustic Zen Satori, made in San Diego (though the raw wire comes from Japan)
Turntable: VPI Scout, made in New Jersey
Phono Preamp: BAT VK-P5, made in Delaware.
This is just a sample. Magnepan speakers are made in Minnesota, Boulder Electronics are made in Colorado, etc.
US made electronics tend to be hand-made, and therefore more expensive, but also much higher quality and resale value