I can confirm FiiO LC-3.5B works wonders with N3. I've been searching for over-ear, L-shaped MMCX connector, L-shaped TRS connector cable for quite a while (albeit not looking very hard). This cable retains the shape of its over-ear hook well while being flexible in other part. The connection is secure and tight, even tighter than Sony's stock cable. Most importantly, it reduces microphonics tremendously compared to the straight stock cable, which was my single biggest grief with this IEM. Now the microphonics is no longer noticeable.
I noticed no deterioration of SQ compared to stock, too.
Recommended.