Hi Guy,

Welcome and enjoy it here.

As far as the adapter goes, it's in the box here in the U.S. and I know it is in Europe also, but there might be countries where it isn't although it makes no sense selling an item in a way that you can't even play it since the PSR 1500/3000 doesn't have a space for batteries like for instance the Casio's.

If you ever buy one, make sure you get a closed box. If the box been opened, chances are they first took the adapter out and then sell it seperately (a not uncommon thing on Ebay for instance).

Anyway, it is NOT a special adapter since the adapter works between 110v and 240v.

Greetings,
John