Unfortunately, there is no bit test in the Fireface 802 FS, unlike the ADI-2 DAC FS.

Perhaps someone could confirm, if I'm playing back my 44.1Khz music files using Apple Music (volume on full, osx audio midi setup @ 44.1Khz) and TotalMix hardware input fader is at 0 then in theory playback will be bit perfect?

Thanks for any info.