Don, I thought you would have been familiar with the KMA as an add-on for all of those who do not own a Korg arranger keyboard.
As I have mentioned on many an occasion the KMA is 100% identical to the (large key) version of the PA50 and 90% identical to the PA80 and even the PA1X.
And with the added bonus of loading my resources , see link below, it would imply anyone having to do a very limited amount of tweaking. I know that Bernie and Deane, just to mention a few have got my resources and to the best of my knowledge are quite satisfied with them.
Again I would like to emphasize that the KMA is of very great interest to those owing a different brand of arranger keyboard and to those who don't want to haul around any weight when occasionally gigging.

regards,
John

http://pasounds.intropagina.nl/page-7--korg-micro-arranger.html
(see pages 7 and 8)