Booby, you are such a dear for asking.....
Yes, the 9V powers the amplified speaker built into the "carrying case" and also has a cord that runs in a channel in the case
to plug into the player. Can't see it in the pics, but its also the channel that the earphone plug runs to plug in the speaker.
I will post some better pics, was bored this morning at just shot some hand held quickies, kinda shiatty I know.