Rick,
I have a padded bag that was made for the X1 (I have 2 )and it will work fine for the KN5000, too. If you want dimensions or details - email me direct. You can have this case for $100. ( It's new, we sell keyboards as a side line to playing )

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Uncle Dave
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Everyone, and everything I listen to is my teacher. Every instrument, every voice, every sound in nature ... they are all my private tutor ... 24/7 for free.