Hi Michael,

Given that you feel your cost savings are significant, I would go for it... 

You will need to buy a good quality step down transformer to convert the 220Volt incoming power in Oz to the 110volt of the US equipment otherwise you'll fry the unit!

Good Luck with it.

Laurence.

A 50W step down transformer with earth isolation ia AU$55 from Radio Parts. Their units work well. They can be a bit bulky and industrial in a neat area and they make a mockery out of standby power savings...  Should have seen my wifes reaction.....

What is the price difference?

beoaus

A possible problem might be if a fault develops with the unit(s). A dealer in Australia would perhaps realise a step-down transformer has been necessary and this could be used as a reason to decline service if they want to be awkward.

I believe the BS4 simply has one jumper switch to change - no transformer necessary. You would no doubt be charged for this but it would be less than a transformer I would hope and much more efficient. Or make it a condition of the sale that this is done in the US. Have a look at the service manual on site.