I own brand new playbar, not even a month old, and I had a static noise. I told the store I bought it from and they replaced it, but the new one made the same noise right away. It's connected to a Toshiba Fire TV through the digital output. I have only noticed the noise when watching Netflix. and I do not have any other devices nearby causing interference (no cell phone signal, bluetooth signals or antennas) I'm not sure but it sounds like interference as it will come and go.
Best answer by Airgetlam
I would recommend that you contact Sonos Support
to discuss it.
I suggest the phone folks, they have more tools available because they're on the phone with you, but they are only available Monday through Friday during business hours. Both the Twitter and Facebook support folks are available 24/7.
There's just not much that the Sonos community forum can do for this kind of issue, it needs Sonos attention.