Using 360 Spatial Sound Mapping technology, these wireless rear speakers work with our latest compatible soundbars to create multiple phantom speakers around your room.4 When you're surrounded on all sides by multiple phantom speakers within an optimised sound field, you'll hear every sound with incredible intensity. It's like you and your living room are inside the movie. The HT-A7000 and HT-A5000 soundbars already offer immersive sound with a wider sweet spot so all the family can share the experience. Add the SA-RS3S wireless rear speakers and you'll enjoy even more authentic home entertainment with sound behind and all around you.