If you like what Ultrabit does to reduce jitter a tiny bit, you will love reducing jitter to 8psec with this:
http://www.empiricalaudio.com/products/synchro-mesh
https://www.audiocircle.com/index.php?topic=157348.0
and using a really good S/PDIF cable like this:
https://www.audiocircle.com/index.php?topic=154425.0
Steve N.
Empirical Audio