Bose Companion 110v Blowing Out A 110v Device In 220v Socket - How To Tell If You've Done That?

Blowing out a 110v device in 220v socket - how to tell if you've done that? - bose companion 110v

He bought the Bose Companion 5 speakers took computers in the United States, China (220 countries). He has bought a processing step of 1000 watts, but before that we do Bose 220v power cord plugged directly here. We did not hear or feel something - if you turned on the circuit, Bose have probably noticed, we? Or just happened in a silence completely alien to us?