SimpleSync is a great way to hear all your video content, in stereo, through a pair of Bose headphones, earbuds, or open earbuds. Resembling the “grouping” feature where audio can be shared across Bose products, you can listen to your video content through a Bose wearable product when you don’t want to disturb others with your video. Personal Surround, on the other hand, uses the benefit of an open earbud to act as a supplementary audio experience to the Bose Smart Soundbar, as if you had surround speakers installed in the room. As such, the effect that the Ultra Open Earbuds are providing is a subtle accompaniment to the primary content, like surround speakers offer in a home cinema, bringing more dimension to explosions, soft wind noises, whispers, etc. that may be in your video content.