If you ignore the numbers, do you have a problem with how the volume scale sounds?

No, I don't, although the steps are small enough that it's kinda hard to tell.

I had an email response from john@empeg that mentioned "lack of coefficient accuracy in the DSP at low volume levels" which would explain the steep part of the curve. That's fair enough. Otherwise, I agree with Richard and Sven that a monotonic curve is the only thing that makes sense.

Borislav