Simply assign Master Mono as the output source for the direct output and use the AUX in function to balance the level of the looper signal with the live signal of the Profiler.
i have tried this but the looped signal is really silent even when Aux in is set on max volume.
in order to get louder signal I need to crank Direct Output volume on max (any value in between results in quality loss of the tone) however even then the recorded looped signal is hard to work with. Can you share yout exact settings please?