Hi Roger,
It's like the PR54, it plays everything but you can not go the other way. KN2600,KN2400 and PR54 recorded songs will not play on KN7000 without conversion. I had written I program that converts EZ-Recorded Songs for the 54 so they would play on the KN7K but I found if I edit the song or add parts the conversion doesn't work.
Now that this seems to be the end of the line I had been hoping someone with more knowledge than I about the Technics Format would write a converter for these 3 instruments but I doubt it will happen.
Best Wishes
Heather
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Heather- Leesburg, FL PR54