I use the Desktop Konnekt 6 in stand alone mode after having set up the TC NEAR software to Scene 3 and full level (while being connected to my computer).
The "Input/DAW Mix" knob is turned fully counter-clockwise to monitor only input signal from a stereo source at line level.
II wish to sometimes use my Desktop Konnekt 6 as a monitor controller in stand alone mode, but it would not serve that purpose if it is going digital and back again to analog.
There is no full analog path in the Desktop Konnekt 6 between inputs and outputs. So the signal always goes through AD/DA path. We believe that the quality of our conversions is excellent and that the signal quality will not be affected.