Just plugged my se530 (almost the same as se535 but with a fixed cable) in and after making tweaking the eq into a V curve this sounds pretty good,
very smooth, these iem's can be picky with their source, but it's a very good match with the a10 series, although there is some hiss,
but nothing out of the normal, as these iem's are hiss prone.
But you get super portability and battery life, and a fairly good sounding unit, (not as refined as an x5) incredible for its micro size.
A quick reminder for new buyers of this a10, cover the screen with anything as you open the box,
cut a screen protector out, or order one. The screen optics outer cover is butter soft, and will scratch under your finger nail.