Amerikan mpc3000 in europe (sweden)

Hi!
this is my first post, what up everybody!
i just got an american mpc3000 and i live in sweden so i need a voltage converter. My question is, how many watt do i need in the converter?

Thanx!

correct me if i'm wrong, i think the mpc has 40w, my converter got 45w...i'm from europe to and bought a mpc from the uk...
check the back of the mpc, there must be a note telling you how much watt it needs...