What does same form-factor mean?

Same size and shape.

Buttons would be approximately the same size, shape, and position, but the actual electronic functions of the buttons could be completely rearranged to Empeg's whims. The new remote would also use a completely different set of IR codes (although the Kenwood ones would be still work with the players for backwards compatibility).

And, of course, everything would be labeled properly.

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Tony Fabris