Jokes aside, when I messed with a dt25, hd500 setup, you had to select an output i.e. line or amp combo. So my novice question is can you select different outputs for dt25(link), 1/4 inch out and XLR and run it in stereo running one side to the dt25 via the Line 6 link and the other to a l3t or another FRFR i.e. K12?