Thanks Fran. In the meantime, I was able to locate the WK7500/CTK7000 owner's manual HERE !

Depending on the list/street price of these two keyboards, these look to be a terrific arranger keyboard option to consider. Listening to the demo and reading the specs. "Casio's not your father's keyboard"! vrroom!

Fran: Can't wait to get your feedback after you receive yours.