I bought a new s88 mk2 2 months ago. After a month of regular use the F above middle C started making an obscene clicking noise even on fairly light touch. See (and hear) 1st movie attached in zip.
Since I was out of the retail return policy I filed a warranty issue. After $100 out of my pocket for packaging / box materials to ship back, NI sent me a replacement unit.
This unit had scratches all over it, there was food crumbs / sticky stuff by the "pattern' button, and the low A makes a crunchy / grinding sound when touched even lightly. For the key issue see (and hear) the 2nd video attached in the zip. I actually use the low keys quite a bit for key switches so this would be terribly frustrating...
Curious if others have had other issues both with the units, and NI sending obviously used and abused units for replacement.
I've lost quite a chunk of faith in NI through this experience - and hope they can resolve this either by delivering a unit in full working order or compensating for loss - been a loyal user for 20+ years.