It isnt the voltage ya need to worry about. Most modern boards handle a variance in voltage. The frequency is what hertz… Us and canuckian power is 60hz. British standard is 59 and iirc oz and kiwi country are 50hz as well. Anything with a motor will have issues unless you get a fairly high end power converter. I used to travel back and forth across the pacific and killed a fair few electronic items inmy day… Some of wm even died because of wrong plugs. Most were just me being a bit too aggressive with switches