Delonghi US site is useless - no electrical specs on the machine apart from input power.

Anyway: The Australian machine can take both 50Hz and 60Hz, but no word on the American model. I would give it a shot and see how it goes with the transformer if you have nothing much to lose. If it works (could be very possible) then you're set.

A quick search on the net shows that some people have done it with other brand machines and had no major issues to note. Time will tell.

Good luck!

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TD06 - Oink.