To be honest I can't remember if the Olives change the isolation quality of the HF5's, because I have been using them for about two years now. But they block out enough sound for me to get lost in music in e.g. a busy train. And colleagues still have to either be in my line of sight or tap me on the shoulder before I notice they need me, even when I have the volume on low.
8/1/15 at 3:37pm