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Sonos Arc Ultra vs Sonos Beam (Gen 2)

Both are Sonos soundbars that play Dolby Atmos, connect to a TV over HDMI eARC and are set up in the Sonos app. The Sonos Arc Ultra ($1,099) is a 46-inch bar with 14 drivers, including two up-firing tweeters and a built-in Sound Motion woofer. The Sonos Beam (Gen 2) ($499) costs $600 less and is a 26-inch bar that creates its height effect with processing instead of up-firing speakers.

Typical US prices checked October 2026, not live prices · As an Amazon Associate I earn from qualifying purchases.

Specs side by side

SpecSonos Arc UltraSonos Beam (Gen 2)
Typical price$1,099$499
Dolby Atmos9.1.4, with two up-firing tweetersYes, with phantom height channels created by processing
Channels (RTINGS)5.1.25.0
Drivers14, including a Sound Motion wooferOne tweeter and four midwoofers, plus three passive radiators
Amplifiers15 Class-D5 Class-D
Size (W x H x D)46.38 x 2.95 x 4.35 in25.63 x 2.68 x 3.94 in
Weight13.01 lb6.35 lb
BluetoothBluetooth 5.3Not listed
Wi-FiWiFi 6 compatible, 2.4 and 5 GHz2.4 GHz 802.11b/g/n
TV connectionHDMI eARC; optical adapter sold separatelyHDMI eARC; optical adapter included
Trueplay room tuningiOS and AndroidSupported iOS device required
Voice assistantsSonos Voice Control, Amazon AlexaSonos Voice Control, Amazon Alexa, Google Assistant
Sonos says it's forLarge rooms and TVsTVs up to 65 inches

Where each one wins

Sonos Arc Ultra is better for

  • Real height speakers: two of its tweeters fire upward for dedicated height channels, and Sonos describes the result as 9.1.4. RTINGS counts it as a 5.1.2 bar against the Beam's 5.0.
  • More bass from the bar itself: a built-in Sound Motion woofer, which RTINGS describes as an integrated sub. The Beam uses four midwoofers and three passive radiators.
  • RTINGS found it typically gets a bit louder than the Beam (Gen 2) in most scenarios.
  • Newer wireless: Bluetooth 5.3 and WiFi 6 support, and Trueplay tuning that works with Android as well as iOS.

Sonos Beam (Gen 2) is better for

  • $600 less, and it still plays Dolby Atmos, using processing to create phantom height channels.
  • Much smaller: 25.63 in wide and 6.35 lb, against 46.38 in and 13.01 lb. Sonos pitches it for TVs up to 65 inches.
  • An optical adapter is in the box for TVs with only an optical output. The Arc Ultra's adapter is sold separately, and RTINGS calls the Beam the better option for an older TV or AV receiver.
  • It works with Google Assistant as well as Sonos Voice Control and Alexa. Sonos lists only the last two for the Arc Ultra.

What you give up with the cheaper one

Less bass and no up-firing speakers.

Which should you buy?

Sonos Arc Ultra: You have a large room or TV, want overhead effects from real up-firing speakers, and want deeper bass from the bar before adding a separate subwoofer.

Sonos Beam (Gen 2): Your TV is 65 inches or smaller, the bar has to fit a narrow stand, or your TV only has an optical output, and you'd rather keep the $600.

Quick answers

Does the Sonos Beam (Gen 2) really do Dolby Atmos?

Yes, but in a different way. Sonos says the Beam (Gen 2) uses advanced processing to create phantom height channels, and its driver list has no up-firing speakers. The Arc Ultra has two up-firing tweeters. Sonos also notes that some formats, including Dolby Atmos via Dolby TrueHD, need an HDMI eARC connection.

Does either soundbar have Bluetooth?

The Arc Ultra does: Sonos lists Bluetooth 5.3 for streaming from any Bluetooth device. Sonos doesn't list Bluetooth in the Beam (Gen 2)'s specs. Both work with Apple AirPlay 2.

Can I add a subwoofer and rear speakers later?

Yes, to either. RTINGS notes both bars can connect with compatible Sonos speakers to grow into a surround setup, and Sonos suggests pairing the Arc Ultra with a Sonos Sub and Era 300 rear speakers.

Sources

As an Amazon Associate I earn from qualifying purchases. It never costs you more.

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