Anyone know where I could get hold of a manual?
Download PA50 SD.It does all the exact fuctions (except for the size).
Thanks Jamman.
I was able to locate a PDF of the Korg PA50 SD
here.

btw: I had Frank check the MicroArranger for 'rootless style' chord voicing recognition on the MicroArranger, of which is included on the PA3X and later implemented on the PA2X in an OS Update. The MicroArranger & PA50 don't support this (yet), but I'm sure it could be easily added on the MicroArranger in an OS update, like it was done on the PA2X.

fingers crossed.