Are you having stability problems using DLNA networked streaming, USB or S/PDIF input?
DLNA can be problematic depending on the playback app used. RAAT will probably be more reliable when it is Roon ready.
If you like using your Sonos Connect, you could lower its jitter by reclocking it with a Synchro-Mesh to lower the jitter over the S/PDIF cable to the Sonica. This would probably get you lower jitter than the Sonica by itself. 20psec jitter on the S/PDIF cable, if you use the right cable:
http://www.audiocircle.com/index.php?topic=154310.0
30-day money-back if you don't like it.
Steve N.
Empirical Audio

