Arc Ultra is the sleekest and most powerful soundbar Sonos has ever created. With an all-new acoustic architecture powered by 14 Sonos-engineered drivers and advanced technologies like Sound Motion the room and precisely places sounds all around you for an entertainment experience that feels out of this world. One of the most significant breakthroughs in audio engineering in nearly 100 years, S performance in an unbelievably flat, compact design. This technology unlocks greater clarity, depth, and balance than ever before possible from a soundbar this sleek. Hear every frequency with astound the bass output of Arc. With Dolby Atmos, Arc Ultra brings sound to life with sensational definition and envelops you in a mind-blowing 9.1.4 spatial audio experience.