The Fiio FA19 is a 10 KNOWLES BA IEM.

So far, I'm loving the FiiO FA19. To my ears, it is, without a doubt, the best IEM FiiO has yet released -- by a margin. And, as I said in the CanJam Singapore Preview Video, this is one that high-end IEM shoppers should listen to, regardless of what price bracket you're shopping in. Even if you choose something else, I think most will agree FiiO put themselves in the high-end IEM candidate pool with the FA19.