The catch
Sonos Arc Ultra
Separate HDMI inputs are missing, so a console or disc player cannot plug in.
Side by side
Sonos Arc Ultra vs Beam Gen 2: Neither adds an HDMI source socket, but Beam frees up 20.75 inches of stand width
Quick verdict
A narrow TV stand points to the Beam Gen 2, which is 20.75 inches narrower than the Arc Ultra and still keeps Sonos expansion open. The Arc Ultra is the one to choose if you want physical upward-firing drivers, Bluetooth music and Trueplay on supported Android phones. Neither bar adds HDMI source inputs.
Before you buy
Why, and what it costs you
Beam is close to half the width
Beam runs about 44.7% narrower than Arc Ultra.
Where this comes from
The math is (46.38 − 25.63) ÷ 46.38. Put them on a 30-inch usable shelf and Beam has 4.37 inches of total width to spare, whereas Arc Ultra will not fit.
The catch
Sonos Beam (Gen 2)
It has neither separate HDMI source inputs nor Bluetooth music playback.
Sonos Arc Ultra
- Why pick it
- Your TV stand is wide and you want physical upward-firing drivers.
- People in your home need to play music over Bluetooth.
- The catch
- Separate HDMI inputs are missing, so a console or disc player cannot plug in.
Sonos Beam (Gen 2)
- Why pick it
- You have under 32 inches of width for the soundbar.
- You want a smaller cabinet that can still grow with Sonos.
- The catch
- It has neither separate HDMI source inputs nor Bluetooth music playback.
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What this page compares
Weigh cabinet fit, physical height speakers, Bluetooth and room tuning for the Arc Ultra and Beam Gen 2, and keep optional speakers separate from the ones in the box.
Start by asking if the larger cabinet fits. After that, pick the height-driver and phone features you will really use.
Which one fits
Pick the situations that sound like you
A shelf 30 inches across
This looks at cabinet width only, ahead of cable and ventilation clearance.
- Sonos Arc Ultra
- Not suitable
- Sonos Beam (Gen 2)
- Better fit
Room tuning on Android alone
Trueplay on the Beam needs a compatible iOS device.
- Sonos Arc Ultra
- Better fit
- Sonos Beam (Gen 2)
- Caution
Plugging a console into the bar
The TV handles video-source switching on both.
- Sonos Arc Ultra
- Not suitable
- Sonos Beam (Gen 2)
- Not suitable
An optical TV, with no adapter to buy
The adapter comes with the Beam, though optical still restricts the audio format.
- Sonos Arc Ultra
- Caution
- Sonos Beam (Gen 2)
- Better fit
In practice
Differences you will notice
Beam is close to half the width
Beam runs about 44.7% narrower than Arc Ultra.
How we worked this out
The math is (46.38 − 25.63) ÷ 46.38. Put them on a 30-inch usable shelf and Beam has 4.37 inches of total width to spare, whereas Arc Ultra will not fit.
An Atmos badge tells you nothing about the driver layout
Beam handles height cues with no upward-firing drivers. Arc Ultra has dedicated hardware that fires upward.
How we worked this out
Neither standalone product puts speakers behind you. Atmos support should not be read as a whole room of speakers coming in the box.
Both share an upgrade path, and neither box holds more
Each is sold as a standalone bar, and compatible Sonos subwoofers and surrounds can be added later.
How we worked this out
If physical rear surround is what you want, buying the Arc Ultra still leaves those accessories to budget for.
Plug in your numbers
Is there room for the soundbar under your TV?
Measure the clear space under your TV. Count only the devices you will plug into the soundbar. Leave out the ones already connected to the TV. The numbers below are placeholders until you enter yours.
Sonos Arc Ultra
Fails these checksWith 0 separate HDMI source inputs, it cannot take the 1 device you want to plug into the bar.
Sonos Beam (Gen 2)
Fails these checksWith 0 separate HDMI source inputs, it cannot take the 1 device you want to plug into the bar.
Measure the top of an open shelf. This check does not cover enclosed cubbies. Detachable speakers count toward the docked width. Leave extra depth for cables and the TV stand. This checks size and port count only. Dolby Atmos, 4K/120Hz passthrough and the audio formats your TV supports are outside it.
Option A
Sonos, Arc Ultra
Sonos Arc Ultra
The Arc Ultra suits you if you want to start with one bar and keep the option of adding a Sonos subwoofer and rear speakers down the road. Plan for nearly 47 inches of cabinet width, and note that your TV handles the source switching.
- Best for
- A roomy TV stand, plus a surround system you assemble piece by piece
Facts we checked
- The cabinet is 46.38 × 2.95 × 4.35 inches.
- It connects over HDMI eARC or ARC and has no separate HDMI source inputs.
- Height output for compatible Dolby Atmos content comes from upward-firing drivers.
- Support covers Wi-Fi music, Bluetooth audio, Speech Enhancement and Night Sound.
- Supported iOS and Android devices can run Trueplay tuning.
Option B
Sonos, Beam Gen 2
Sonos Beam (Gen 2)
A narrow TV stand is no problem for the Beam, and it leaves the door open to a larger Sonos system. Its Atmos effect comes from processing. It has no upward-firing drivers. Room tuning also requires a compatible iPhone or iPad.
- Best for
- A small TV setup where rear speakers may come later
Facts we checked
- The cabinet is 25.63 × 2.68 × 3.94 inches.
- An included optical adapter comes with the HDMI eARC or ARC connection.
- Five amplified drivers, none of them upward-firing.
- Support covers Wi-Fi music, AirPlay 2, Night Sound and Speech Enhancement.
Spec by spec
Where they really differ
| Spec | Sonos Arc Ultra | Sonos Beam (Gen 2) | In practice |
|---|---|---|---|
| Width | 46.38 inches | 25.63 inches | Across the stand, the Beam takes 20.75 inches less. |
| Height output | Physical upward-firing drivers | Virtual height processing | Atmos content plays on either one, but each builds the height effect differently. |
| Music from a nearby phone | Wi-Fi and Bluetooth | Wi-Fi, no Bluetooth audio | The Arc Ultra takes Bluetooth audio, so the sending device does not have to join the Wi-Fi system. |
| Trueplay phone support | Supported iOS and Android | Compatible iOS device required | If everyone at home uses Android, the Beam setup plan has to include getting access to an iOS device. |
| Optical-only TV | Separate optical adapter purchase | Optical adapter included | Optical carries Atmos on neither. For the Arc Ultra, count the adapter in the cost. |
Trade-offs
What each pick costs you
With Sonos Arc Ultra
- You pay extra for a subwoofer and rear speakers.
With Sonos Beam (Gen 2)
- Upward-firing drivers are absent, so height effects are virtual.
Decision guide
How to decide
Beam is close to half the width
Compared with Arc Ultra, Beam is about 44.7% narrower. The calculation is (46.38 − 25.63) ÷ 46.38. Take a 30-inch usable shelf: Beam fits with 4.37 inches of total width to spare, and Arc Ultra does not fit at all.
An Atmos badge tells you nothing about the driver layout
Beam creates height cues through processing and has no upward-firing drivers, while Arc Ultra has dedicated upward-firing hardware. Neither one, bought alone, puts speakers behind the listener. Atmos support does not mean a roomful of speakers comes in the box.
Both share an upgrade path, and neither box holds more
Each one is sold as a standalone bar, and each can join compatible Sonos subwoofers and surrounds later. Buying the Arc Ultra therefore does not remove the need to budget for those accessories when physical rear surround is what you are after.
What this page can’t tell you
- This comparison rests on manufacturer specifications and package contents rather than a controlled listening test. How a bar sounds also depends on room shape, placement and source content.
By the numbers
What the data shows
What we found across the soundbars we compare, plus the checked facts behind each finding.
How many fit
Only 7 of the 31 models checked meet every need here: “My bar can’t be wider than 32 inches” and “I plan to buy rear speakers later”.
7 models fit, out of 31 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “My bar can’t be wider than 32 inches” and “I plan to buy rear speakers later”. A need with no documented match is not counted.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Sonos Arc Ultra |
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| Sonos Beam (Gen 2) |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Sonos Arc Ultra
Your TV stand is wide and you want physical upward-firing drivers.
See price & reviews on AmazonSonos Beam (Gen 2)
You have under 32 inches of width for the soundbar.
See price & reviews on AmazonEach link opens in a new tab.
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