We have re-written the manual which although has many more pages, also provides much more information plus guides you step by step as to when to do what ... and why. Many folks prefer these versions for most recent KETRON products and you can read more here:-

http://www.ajamsonic.com/downloads.html

....
Also new info on our website:-

SD40:- http://www.ajamsonic.com/ketronsd40.html
Click on any of the "i" and get more info on how to

SD60/90 (new):- http://www.ajamsonic.com/sd9.html

More to come!