A:AnswerI find you can only choose one bluetooth accessory at a time when using the soundbar. I use without Bose App just fine and volume can be controlled separately.
A:AnswerThere’s only 4 connection types for all sound bars which is optical audio cable, aux cable which i do not recommend, bluetooth and the best is HDMI “arc” cable. check to see if you have any of these connections/wires. If not I think you’ll need some sort of adapter with RCAs and any of the 4 connections i stated.
A:AnswerAny headphones with bluetooth will work. I have three separate earbuds programmed to my TV for output to Bose System. But you can only use one at a time, unless you have a multiple headphone adapter set.