Ingolf,
I think you better talk to somebody there at Kemper that knows a little something about digital conversion and learn about what the benefits are in maximizing the signal path before A-D and before D-A along with the impact it has on signal noise not to mention dynamic range before making a such an generic assumption. You may actually learn something useful.
Well, I know very well about the theory of 'exploiting every bit' when going AD - DA, but everything I've mentioned earlier I actually gathered from Kemper about operating the profiler.
So it seems you're the one who should talk to them, and why not?
If you're not convinced, pose a question directly. They'll answer and I'm looking forward to the discussion.