I can confirm that the Y-Split IS an impedance stabilizer, as it's written on the box that the BA200 comes in. BTW, I have the american version, so I don't know, maybe it isn't written on the boxes of the other versions. Also, I've found the Bi-Flanged Earsonics tips to fit them great, and they offer better comfort than the stock silicone tips. They also make the sound signature darker and more bassy.
3/2/12 at 5:24am