The Sonos Arc Ultra + Sub (Gen 4) pack is the ultimate combination to transform your living room into a true cinema. The Arc Ultra soundbar, equipped with Dolby Atmos technology, immerses you in the heart of the action with exceptionally clear spatial sound. Its 14 speakers, including 7 tweeters, 6 mid-woofers, and a Sound Motion™ woofer, deliver enveloping 360° sound with striking height effects.
The Sub (Gen 4) subwoofer perfectly complements the Arc Ultra by providing deep, punchy bass. Its two force-balanced woofers generate powerful sound while minimizing unwanted vibrations. Together, the Arc Ultra and Sub 4 offer you a sound experience worthy of the best theaters, all in a compact and elegant format.
The Arc Ultra features Sound Motion™ technology, a major advancement in the audio field. This innovative woofer with four motors and a dual membrane generates bass with unmatched depth and precision, despite the soundbar’s slim design. The result is more dynamic and immersive sound than ever before.
The 15 perfectly calibrated class D amplifiers optimally power each of the 14 speakers. A sophisticated signal processing algorithm analyzes your room’s acoustics in real-time to adjust the sound output accordingly. This ensures you always enjoy tailor-made sound, no matter where you place your soundbar.
The Arc Ultra is packed with technologies to offer you a personalized listening experience. The Trueplay™ function, now compatible with Android as well as iOS, uses your smartphone’s microphone to analyze your room’s acoustics and optimize sound output. You can also manually adjust audio settings via the Sonos app.
The Voice Enhancement mode lets you choose the level of dialogue clarity, while the Night Sound mode reduces loud sounds and amplifies quiet ones for low-volume listening. Thoughtful features to enjoy your content in the best conditions, day or night.
In terms of connectivity, the Arc Ultra is equipped with an HDMI eARC port for simplified connection to your TV. It is also Wi-Fi and Bluetooth compatible for wireless music streaming from your smartphone, tablet, or computer. With Wi-Fi 6 and the new antennas of the Sub 4, the wireless connection is more stable and faster than ever.
The Arc Ultra can be controlled with most voice assistants on the market, including Amazon Alexa and Sonos Voice Control. You can also control it from the Sonos app, Apple AirPlay 2, or directly via the touch controls integrated into the bar. With so many options, you’re sure to find the one that suits you best.
Despite its power, the Arc Ultra + Sub 4 pack boasts sleek lines and a compact format. With its curved profile and enveloping acoustic grille, the Arc Ultra elegantly blends under your TV, whether you place it on a stand or mount it on the wall. The Sub 4 also features a minimalist look with its rectangular shape and new matte finish.
Both elements are available in black or white to match any decor style. Their no-frills design emphasizes the essentials: providing you with an extraordinary sound experience, discreetly. The Sonos Arc Ultra + Sub 4 pack perfectly combines audio performance, high-tech features, and contemporary design.
Yes, the Arc Ultra is compatible with Dolby Atmos. Its 14 speakers, including two upward-firing ones, deliver 3D sound with realistic height effects. You are literally enveloped by sound for total immersion in your movies, series, and video games.
Absolutely. The Arc Ultra is powerful enough to deliver quality sound on its own, including bass thanks to its integrated Sound Motion™ woofer. However, adding the Sub 4 allows you to delve even deeper into low frequencies for an even more striking and immersive effect.
The Arc Ultra measures 87 mm in height, 1141.7 mm in width, and 116.7 mm in depth. Despite its relatively compact size, it incorporates no less than 14 speakers for powerful and detailed sound. It will easily fit under most TVs on the market.
Yes, the Arc Ultra is compatible with most voice assistants, including Amazon Alexa and Sonos Voice Control. You can ask it to play your favorite playlist, pause, adjust the volume, or skip to the next track, all without leaving your couch.
Absolutely. Like all Sonos products, the Arc Ultra is designed to easily integrate into a multiroom audio system. You can group it with other Sonos speakers to play the same sound in multiple rooms, or assign different content to each speaker. The possibilities are nearly endless.
Yes, good news for Android users: the Trueplay feature, which optimizes sound based on room acoustics, is now compatible with Android devices. Simply start the calibration from the Sonos app and follow the instructions. On iOS, the process remains unchanged.
Laurent
Very good equipment, it's a shame that calibration is not as complete with Android as with iOS
Comment from April 28, 2026 — Experience from April 17, 2026
Giuseppe
The app setup and usage are not straightforward. The product is of high quality both in design and sound performance.
Comment from February 25, 2026 — Experience from February 12, 2026
Jonathan
Good product that requires a bit of setup
Does not replace a 5.1 system
Comment from November 30, 2025
