Unfortunetly,these days most equipment [Still using a normal mains transformer, not switched mode] designated to be used within the EU' is supplied with a power transformer that is designed for 230v, the theory is; that it should work fine between 220v, and 240v, however, a lot of the equipment I have had in for repair, and tested needs only 220v, and sometimes less to work optimally, so in theory, it has at least 20v over what the equipment is designed for!