Looking at the messages on the community this doesn’t appear to be a new problem but has anyone found a way around it (please note the comment about not having too many boxes).
Best answer by AjTrek1
A little know fact that RCA input/output switches can actually work in reverse. Most have multiple input with one output. In your case you would use the Output as the incoming from your pre-amp. One in-put would connect to your Play 5 the other to your headphones. Click here to view an example.
One again...are your headphones wired, BT or both?