With the n6ii a01 and the andromeda gold, very little if any at all. And then I find myself doubting if the small differences I hear in "dynamics" are just due to volume level differences, because I am pretty sure there is a slight volume imbalance between the two. And I am very aware that louder volumes often equate to perceived quality improvements, all else being equal. So either thats a testament to an excellent single ended output on the n6ii/a01, or maybe I am just not sensitive enough to these rather small changes... or that balanced is just sort of unnecessary with IEMs, at least for me. Also, I have no "high end" cables, as I dont put much stock in aftermarket cables for sound differences (mainly for ergonomics), and have been pretty happy with the stock cable here. I was using stock andro cable, and the stock balanced cable that came with my obravo cupids (which is a pretty nice cable in its own right).