Hi Folks , When i purchased my KN7000 .I also ordered the 4 expansion boards at the same time . I'm glad i did !!
In my opinion they are very good .
The expansion board with the female soprano soloist sound is excellent and a much sort after sound effect .
I say to any one still wondering to buy the expansion boards or not "hurry up and get them whilst you can "
regards to you all .........Giovanni