Featuring breakthrough Sound Motion™ technology for a more expansive soundstage, Arc Ultra brings your entertainment to life like no other soundbar.

Experience clearer dialogue, deeper bass, and more detailed sound that precisely surrounds you from every direction—all in an unbelievably sleek design. Dolby Atmos takes immersion to a whole new dimension, creating a 9.1.4 spatial audio experience.1 Speech Enhancement, powered by AI, detects the human voice to clarify dialogue, giving you greater control so you never miss a word. Quickly set up Arc Ultra with the included HDMI cable, and enjoy streamlined control with your TV remote. You can also use the Sonos app, the touch controls on top of the soundbar, Sonos Voice Control, and Amazon Alexa. When your TV is off, stream music and more from all your favorite services using WiFi and Bluetooth. Add a Sonos Sub and Era 300 rear speakers for the ultimate Dolby Atmos surround sound experience. Listen all around your home when you add Sonos speakers to other rooms.

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 Motion™, 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 midrange 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.2 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.3 Connect two Sonos Ace headphones at once to enjoy a movie with a companion or immerse yourself in couch co-op gaming.

Make sound feel at home

TrueCinema technology with Arc Ultra enhances your Sonos Ace headphones by precisely mapping your space, then virtually rendering the most lifelike surround sound experience. You’ll feel like you’re listening out loud in your own private theater.

Technical Specifications

Audio

• Amplifiers: Fifteen Class-D digital amplifiers perfectly tuned to the unique acoustic architecture.
• Tweeters: Seven precisely angled silk-dome tweeters create crisp high frequencies and clear dialogue. Two of these fire upward, creating dedicated height channels for spatial audio.
• Midwoofers: Six midwoofers ensure faithful playback of mid-range frequencies.
• Woofers: Sound Motion, a four-motor, dual-membrane woofer, delivers exceptional bass in a revolutionary flat, compact design.
• Microphones: The far-field microphone array uses advanced beamforming and multichannel echo cancellation for quick and accurate voice control and Trueplay tuning. Disconnect by toggling off the mic switch.
• Adjustable EQ: Use the Sonos app to adjust bass, treble, and loudness.
• Trueplay: This software measures the acoustics of the room then fine-tunes the EQ. Compatible with iOS and Android devices.
• Speech Enhancement: AI detects the human voice to make every word crystal-clear. With just a tap in the Sonos app, choose between four customizable levels for optimal audibility.
• Night Sound: Turn this setting on in the Sonos app to reduce the intensity of loud sounds and increase the level of quieter sounds.
• Home Theater Audio Formats: Stereo PCM, Dolby Digital, Dolby Digital Plus, Dolby Atmos (Dolby Digital Plus), Dolby Atmos*, Dolby TrueHD*, Dolby Atmos (True HD)*, Multichannel PCM*, Dolby Multichannel PCM*, DTS Digital Surround**
• Dolby Atmos Music: Requires compatible content.
• TV Audio Swap: Swap TV audio between the soundbar and one or two Sonos Ace headphones.

Details + Dimensions

• Height: 2.95 in (75 mm)
• Width: 46.38 in (1,178 mm)
• Depth: 4.35 in (110.6 mm)
• Weight: 13.01 lbs (5.9 kg)
• Colors: Black, White
• Finish: Matte
• Mounting: M5 x 0.8mm thread pitch L6.5mm
• Controls: Use the capacitive touch controls to play, pause, skip, replay, adjust the volume, turn off voice assistants, and group or ungroup Sonos products.
• Bluetooth Button: Press to pair with a Bluetooth device.
• Mic Switch: Toggle off the switch on the back of the product to disconnect power to the mics.
• LEDs: Lights on the product indicate connection, mute status, microphone activation, and errors.

Power + Connectivity

• WiFi: Compatible with WiFi 6. Connect to WiFi with any 802.11a/b/g/n/ac/ax 2.4 GHz/5 GHz broadcast-capable router.
• HDMI eARC: Connect to your TV's HDMI eARC/ARC port with the included HDMI cable.
• Optical: Optical audio adapter sold separately.
• Bluetooth: Bluetooth 5.3 supports audio streaming from any Bluetooth-enabled device.
• Voltage: 100-240V 50/60Hz internal power supply
• CPU: Quad Core, 4xA55 1.9GHz
• Memory: 2GB SDRAM, 8GB NV
• Voice: Works with Sonos Voice Control and Amazon Alexa. Availability of services varies by language and country.
• Apple AirPlay 2: Works with AirPlay 2 on Apple devices iOS 11.4 and higher on WiFi
• TV Compatibility: Not compatible with CCFL-backlit TVs (manufactured 2004–2012)

Box Contents

• Power Cable I: Length: 6 ft (2 m)
• HDMI Cable: Length: 4.9 ft (1.5 m)
• Documentation: Quickstart Guide and legal/warranty information