The soundbar, reinvented
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 Motionâ„¢, Arc Ultra fills every inch of the room and precisely places sounds all around you for an entertainment experience that feels out of this world.
Key to next-level immersion
Sound Motion™ technology redefines what’s possible in audio performance. By integrating Sound Motion™ into Arc Ultra, we’re able to obtain a deeper, more powerful bass response in a smaller package. This innovation frees up space for additional tweeter and mid-range drivers, delivering a more expansive and balanced soundstage, surpassing the previous generation of Arc.
Sound in a whole new dimension
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.1
Beyond immersive
Pair Arc Ultra with a Sonos Sub and Era 300 rear speakers for the ultimate Dolby Atmos surround sound experience, with bass you can feel and jaw-dropping detail from every direction.2Â Make the experience all your own with a pair of Sonos Ace headphones.
Crystal-clear dialogue for every listener
Speech Enhancement with Arc Ultra uses AI to detect the human voice and clarify dialogue. With four customizable levels, you can ensure every listener hears every word with precision.
Design worthy of your home
Distinctive curved shape. Low-profile design. Matte finish. Arc Ultra is thoughtfully crafted to look great in your home and keep the focus on your entertainment.
An exclusive entertainment experience
Instantly swap TV audio from Arc Ultra to Sonos Ace for private surround sound and sensational spatial audio with dynamic head tracking.3Â Connect two Sonos Ace headphones at once to enjoy a movie with a companion or immerse yourself in couch co-op gaming.4
Transform your home theatre experience
Pair Sub 4 with Sonos Arc Ultra, Arc, or Beam for dramatically richer bass, clearer highs, and deeper immersion in all your entertainment.1
Bring music to life
Discern every subtle detail and enjoy a more spacious soundstage when you pair Sub 4 with Sonos Five, Era 300, or Era 100.1
No buzz or rattle
The acoustic architecture creates a force-cancelling effect that virtually eliminates distortion.
Better sound all around
Sub 4 takes over the lowest frequencies so your paired soundbar or speakers can deliver high and mid frequencies with even greater clarity and precision.
Perfectly tuned for the room
Trueplay™ optimizes the sound for the unique acoustics of your space so the bass never sounds harsh, muddy, or flat — even if you place Sub 4 next to the wall or lay it flat and put it under your sofa.
Iconic design
Made to be seen, heard, and felt. Sub 4 features an elegant sculptural shape and updated matte finish that perfectly matches your paired Sonos soundbar or speaker.
Plug and play
Simply plug in the power cable and open the Sonos app to quickly add Sub 4 to your system.
Place it where you want
Sub 4 connects to your system over WiFi, so you can place it where it fits and looks best in the room.
Compatible products
- Arc Ultra
- Arc
- Beam (Gen 2)
- Beam (Gen 1)
- Ray
- Five
- Era 300
- Era 100
Double the drama
Pair two subwoofers with Arc Ultra for bass so deep and sound so immersive, you’ll forget you’re at home and not in an actual theatre.1
Dive into the difference
Next Gen Ready
Featuring updated internal electronics, including a faster processor, more memory, and a new WiFi 6 Radio—the Sub 4 is our most sophisticated Sub yet.
Sustainable Power
Showcasing a greener product design, Sub 4 reduces idle power consumption by up to 50%.








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