Hi anthonyr, would you describe the fading in and out as if the audio is changing in volume up and down, or is more like the audio stops then starts up again?
If it’s stuttering, it’s most likely losing data between the headphones and the Connect, or the Connect and the Playbar, or maybe both. This could be wireless interference acting up on either side. It looks like the HDR 175 use 2.4 GHz wireless to communicate, same as Sonos devices and your home networks.
Do you have a Sonos device wired to the network or are all of your speakers wirelessly connecting to the router?
Are you able to test a different set of headphones, ideally wired ones?
The HDR175/RS175 does indeed use proprietary wireless in the 2.4GHz band, with quite a high signal strength. If the Connect is wireless too, and the headphone transmitter too close -- less than 50cm say -- they could well be fighting one another.
The Connect would be particularly susceptible when streaming from the Playbar.
@ratty @Ryan S
Many thanks to you both for your response and support.
I have separated the Connect and the HDR base station as far as possible and the issue is resolved. Rookie error (!!)
Thank again…...
Glad it was something simple! Stick around and join some discussions. Let us know if anything else comes up.