Actually, if I remember correctly, the 2150's in question were built with a power supply that was either 120V/60Hz or 230V/50Hz specifically as a way to support international customers. It would cost more as a result (not sure what all's involved, but you'd most certainly be dealing with a very differently-wound transformer) so I doubt that it became standard, but if they built a limited run that way for folks who wanted to use them in Europe and elsewhere I bet they've not sold a ton of them.