Will a "universal voltage" component work in US?

If you think about the true meaning of "universal" it should work on any alien spacecraft or any planet.

This is only the ''Known Universe""

Except tuners. Technically they will work, you just won't hear much.

When I said "universe" I meant it in the "universal" sense that encompasses everything that exists or does not exist, known or unknown, knowable or unknowable. And a truely universal piece of stereo equipment will (DOES) work anywhere!