Commento ufficiale
There are different regional builds of the CDJ, and if the panel on yours does not read 110-240V, then you may require a transformer to adapt if you are using a 240V model in a 120V region.
Please note that the CDJ-3000 (and CDJ-2000NXS2 for example) may also say "100V 50/60Hz" but that is to indicate compatibility in Japan only.
Again, please check the labeling on your product. If in doubt, contact our support teams.