I have Bose X's and using in 92's and 76's. Works perfectly. I can't think of situation to connect MP3's or something else when I am on duty. You might found yourself explain that to your Cheaf pilot.
Some of my mate's were complain of noise in 92, but with Bose's I can't complain. It is noisy, but not that bad it was with regular headsets (Davis Clarks) I have in back up. Some pilot's are using Speed Zulus and likes them, so... Both are expensive, but if I can safe my hearing (and my Medical!) with that investment there is no problem. Always you can get money back from Tax.
Hostile
