I had to read your post at least twice, I was wondering how on earth you managed to use your gear here on a 230V system.
And yes, you'd get that with them universal devices that work on pretty much 100-300V (I think it is).
The reason I mentioned the whole adapter thing in the first place was that, what used to be EnergySafe here (which is now under WorkSafe/OSH), banned the importation and use of certain types of travel adapters, back in 2010(?)
This was due to people importing cheap appliances that were never meant to run on 230V single phase, buying an adapter and lo and behold, the kitchen/house goes on fire,
mainly because the load current through the said adapters was well outside of their design current.
However, I'm talking about high current appliances like toasters and kettles, although I'm not sure why you'd go through all that bother, when you can buy a decent toaster or kettle here for NZ$20-30, that will work perfectly fine and not go on fire, if you're lucky.