It has to be converted to 120. Check with the manufacturer, some companies put a switch inside the unit for that purpose. Don't know if Devialet does as well.
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Dont think so we used to sell Devialet and we think they use a Switched Mode power Supply same thing that powers your laptop.
This means you can plug it into any AC socket.
It is easy to check if the manual says 100v - 220 or 110-220v or anything with a dash that usually means an auto ranging power supply.
If that is the case change your iec and you are ready to go.
Dave and Troy
Audio Doctor NJ