The FLACs are originally 24bps, as downloaded from bandcamp. I didn't transcode them. I might be stupid, but not that stupid.

And the N9 is 16 bit per sample per channel, like CD. (these flacs are 24 bit per sample per channel...) Why do you think it's only 8 bit or even 12 bit?... 8bps would introduce a very audible hiss.