I personally don't use headphones on my scanner for a few reasons. I'm usually in the lounge where there are Conductor radios picking up the same stuff, headphones are cumbersome when walking throughout the train, and in a setting like the lounge where people are talking anyway it's not necessary. Now mind you this is a scanner we're talking about in the lounge. As for TV's, radios, etc. in the coaches you will usually be asked to put on headphones. In a sleeper however, as long as the device isn't blaring, it's your room, do what you wish.