Hello Gents,
Your post is from a very long time ago! I hope you're still around.
I have a page where I've described the .efc file. However, raeding your post leads me to believe that I've got all the information wrong!
Can you take a quick look and comment here letting me know your thoughts?
http://technicskn7000.com/technics-instruments/technics-file-types/kn7000-file-efc/Thank you,
Mike