Smeyers...The internal A/D and D/A are fine IMHO. To check this out, set the EQ flat, and then compare the EQ output using Bypass mode of the unit. Of course having the option of digital in and out is nice if it suits your system. But, you might consider if the Behringer A/D and D/A could actually be better than other equipment.
The graphic EQ is 1/3 octave, and this works for me. I actually do have an analog parametric equalizer, 7 bands, for my center channel, (which is an identical set of speaker and subwoofer) so I can do a good comparison. The Behringer does a better job, and there is no comparison of the effort required. The parametric Eq settings in my system are all more than 1/3 octave width.
The graphic EQ is 1/3 octave, and this works for me. I actually do have an analog parametric equalizer, 7 bands, for my center channel, (which is an identical set of speaker and subwoofer) so I can do a good comparison. The Behringer does a better job, and there is no comparison of the effort required. The parametric Eq settings in my system are all more than 1/3 octave width.