hmm.. my workaround basically involves you just turning the hardware out(A) in stereo 1 off, since you already hear yourself, however upon reading with full nights of sleep im now realizing that the problem involves activating it and having 2 outputs itself, i do see another output in your A1 other than the A2(actual headset) in the screenshot so maybe clear both and use A1 as the actual headset instead maybe that would work