Step down fine. With a high torque DD startup like a DP-75 or 80, i would oversize beyond 2x, but i’m a belt and suspenders kind of guy. 2x is probably good advice.
With the DP series tables it also pays to look under the hood - pull the platter and look for a multi market voltage switch… many of the tables were built this way…i have 1 that came from Italy… the internal transformer has a lot of voltage pick offs to the switch. In certain markets, as is the case with my New Zealand DP-75, the switch is there but covered by the sheet metal platter bowl. Remove the motor cover to access the switch,
jim