Does it turns the sound from unbalanced to balanced since its 3.5mm unbalance to 2.5mm balanced?

@Snowball0906 Wait a second, it is more like 2.5mm Balanced to 2.5mm Balanced, just mother and father jacks (?)

In a couple days I'll have an iEMatch 2.5 on its way. For use with X5iii and F9 Pros (with LC-2.5C). If you still have iEMatch and your X5iii on hand, can you comment/say whether or not the mildly noisy BO from X5iii sees improvement from iEMatch with these IEM's?

@WitzyZed - Woaaah, I hope it will satisfy you nicely! I think it should help a bit if you have really sensitive IEMs, I do have both X5-3 and F9PRO, it does help a bit with the hiss, but also feels like it makes them a touch smoother for some reason, maybe the change in output impedance makes them a touch less bright, though that's a very wild speculation, curious how it will work out for you.