Upgrade 110volts to 220volts?

Question

Upgrade 110volts to 220volts?

Answer 1

Sure. A transformer will provide double the voltage at half the amps. Will that work for you? If you need full current, you'll need two hot leads and one common.

If you don't already understand 220, you should probably hire some help.

Answer 2

Sure, an electrician should be able to make a simple wiring change to do this.  However, most home theater equipment in the US operates from 110 Volts.