Roku has a streamer model that includes a 3.5mm jack on the remote for ear buds, headphones, etc.
One of my customers has hearing problems and since they don't use Zone 2, I was able to connect the transmitter for a set of Sony wireless headphones- the universal remote has a button for using the headphones, but there's no harm in that being active constantly andall he has to do hwen he wants to hear the sound is turn the power switch that's on one of the ear cups.