100V saturn on 110V USA mains?

Well ive just gotten my Jpn Saturn and it says 100V ont he back of it, now seeing as im in Australia where the voltage is 220/240V i'm going to need a step down transformer.
Would a Jpn Saturn work fine on the 110/120V out put of the Step down converter or would it make shit nice and smokey?

I use my Jap saturn with a 110v stepdown here in the UK, it gets a bit warm if you have been playing for a few hours, but nothing serious..

Thanks for that, I have just bought a 220V to 100V stepdown converter.
I live in australia so i will have to use an adapter to change it from the UK 3 prong to Australian 3 flat pin.

I was just unsure about the voltage differences with the Saturn saying 100V and the stepdown converters outputting 110V.