Not sure, i don't have any experience with the s12, or the N5005 yet (order placed just yesterday). But it's also quad BA with a DD in the N5005 vs the s12 planar driver, so i imagine there will be a decent difference between the two, sound wise.

There is a user on here who recently put out a pretty detailed post about the N5005 if I recall. But mostly i just wanted to let folks know about the sale if they're interested