Or a cheaper alternative would be to do as I have done - run a 240 wire to a new outlet. You'll have a dedicated power source and better performance.
step up transformer noise
I purchased an amp from Europe that needs 240v [ I am on north American voltage].. I bought a step up/step down transformer to equalize the voltage. it works, but the transformer produces noise through the speakers, even when the amp is turned off. the transformer I bought was $60.. do I need one specific for audio applications? any suggestions?thanks for any help, dan