spaniel

This is not technically a complex electronical problem but it is a big problem for me all the same. I was wondering if anybody had heard of a firm called Extrosonic as i have a power amp of their's which won't work in my backward country (england) and doesn't have the required info so that i can buy a power converter (it is on 110V, we use 240V). I have searched through the internet but not found the firm anywhere, maybe they've changed names or don't exist anymore? If anyone can help i would be most grateful. Thanks Daniel