Since I can`t compare this set with another Bose I don`t know wether its specific to that single set....
I think it must be that specific headset. I have flown with several different Bose ANR headsets and they really play in their own league. But a Sennheiser reaches about 80 to 90 percent of Bose comfort levels at 1/2 of its price, so for me the choice is simple...