The catch
Sony BRAVIA Theater Bar 9
You buy the subwoofer and rear speakers separately.
Side by side
Sony BRAVIA Theater Bar 9 vs Sonos Arc Ultra: Sony takes a console directly, whereas Sonos depends on the TV having enough source inputs
Quick verdict
If one console or disc player needs a direct HDMI connection, take the Sony Bar 9. If your sources already fit on the TV and you want Sonos music and expansion, take the Arc Ultra. The Sony is the wider of the two, and neither standard package includes a subwoofer or rear speakers.
Before you buy
Why, and what it costs you
Plugging in directly can get around an audio-format bottleneck
With a player plugged into Sony, supported audio reaches the bar without the TV having to pass it through first.
Where this comes from
The bar still has to support the source format, and the video mode support needs checking. The Arc Ultra gets source audio by way of the TV, which keeps TV passthrough in that chain.
The catch
Sonos Arc Ultra
Separate HDMI inputs are missing, so a console or disc player cannot plug in.
Sony BRAVIA Theater Bar 9
- Why pick it
- Your setup requires one direct 4K 120 Hz HDMI input.
- A disc player should send supported audio directly to the bar.
- The catch
- You buy the subwoofer and rear speakers separately.
Sonos Arc Ultra
- Why pick it
- Every one of your video sources can plug into the TV.
- You have room for 46.38 inches but not for a 51.18-inch-wide cabinet.
- The catch
- Separate HDMI inputs are missing, so a console or disc player cannot plug in.
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What this page compares
Sony Bar 9 and Sonos Arc Ultra differ in HDMI routing, cabinet width and TV compatibility, and subwoofers and rear speakers add to the cost of either.
With the Sony, one HDMI source can plug into the bar itself. The Sonos leaves all video source switching to the TV.
Which one fits
Pick the situations that sound like you
Sending one console through the bar at 4K 120 Hz
Sonos lacks a source input, and Sony has one.
- Sony BRAVIA Theater Bar 9
- Better fit
- Sonos Arc Ultra
- Not suitable
A soundbar spot 49 inches wide
Judged on cabinet width alone, ahead of acoustic clearance.
- Sony BRAVIA Theater Bar 9
- Not suitable
- Sonos Arc Ultra
- Better fit
A screen gap of 2.7 inches
Sony is wider, yet it sits lower.
- Sony BRAVIA Theater Bar 9
- Better fit
- Sonos Arc Ultra
- Caution
A home that already uses Sonos
Music controls you already have can make ownership simpler.
- Sony BRAVIA Theater Bar 9
- Depends
- Sonos Arc Ultra
- Better fit
In practice
Differences you will notice
Plugging in directly can get around an audio-format bottleneck
With a player plugged into Sony, supported audio reaches the bar without the TV having to pass it through first.
How we worked this out
The bar still has to support the source format, and the video mode support needs checking. The Arc Ultra gets source audio by way of the TV, which keeps TV passthrough in that chain.
Neither model wins on size in every direction
Arc Ultra is 4.8 inches narrower, and Sony is 0.43 inch shorter in cabinet height.
How we worked this out
Sonos is the better fit for a position 49 inches wide, and Sony for a screen gap of 2.7 inches. If you have both constraints, neither may fit unless you move the TV.
Comparing full surround systems takes two complete shopping lists
The two listed ASINs are both standalone bars.
How we worked this out
Include each brand’s compatible subwoofer and rear speakers before you compare final system cost. Setting one bar against another brand’s full bundle conceals the biggest difference in what you buy.
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.
Sony BRAVIA Theater Bar 9
Fails these checksIt takes 51.18 inches of width, more than your 48 inches.
Sonos Arc Ultra
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
Sony, HT-A9000
Sony BRAVIA Theater Bar 9
The bar alone is just over 51 inches wide, so measure your cabinet first. The Bar 9 is meant for a wide TV setup where you want a direct high-refresh HDMI connection and plan to choose the subwoofer and rear speakers separately.
- Best for
- One high-refresh HDMI source on a wide TV stand
Facts we checked
- The bar is 1,300 × 64 × 113 mm.
- One HDMI eARC TV connection and one HDMI source input.
- The manufacturer confirms passthrough for 4K 120 Hz and VRR.
- Upward-firing drivers are among the thirteen speaker units.
- Support covers Wi-Fi music and phone-guided Sound Field Optimization.
Option B
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.
Spec by spec
Where they really differ
| Spec | Sony BRAVIA Theater Bar 9 | Sonos Arc Ultra | In practice |
|---|---|---|---|
| HDMI source inputs | 1 with 4K 120 Hz and VRR | 0 | Sony can take audio straight from a source, then send that source’s video on to the TV. |
| Cabinet width | 51.18 inches | 46.38 inches | Sonos takes 4.8 inches less of the stand. |
| Cabinet height | 2.52 inches | 2.95 inches | Sony is lower, though wider. Measure in both dimensions. |
| Included external speakers | None | None | Physical rear speakers and a separate subwoofer cost extra with both. |
| TV-brand extras | Selected features need compatible BRAVIA TV | Core operation is not tied to a TV brand | Look at what the TV needs exactly. Not every HDMI connection is equal. |
Trade-offs
What each pick costs you
With Sony BRAVIA Theater Bar 9
- There is just one separate HDMI source input.
With Sonos Arc Ultra
- You pay extra for a subwoofer and rear speakers.
Decision guide
How to decide
Plugging in directly can get around an audio-format bottleneck
When a player connects to the Sony, supported audio reaches the bar without the TV having to pass it through first. The bar must still support the source format, and video mode support needs checking. The Arc Ultra gets source audio by way of the TV, so TV passthrough stays in that chain.
Neither model wins on size in every direction
In width, Arc Ultra is 4.8 inches smaller, and in cabinet height the Sony is 0.43 inch smaller. Sonos suits a 49-inch-wide position. Sony suits a 2.7-inch screen gap. If you face both constraints, neither may fit unless you move the TV.
Comparing full surround systems takes two complete shopping lists
The two listed ASINs are both standalone bars. Before you compare final system cost, add each brand’s compatible subwoofer and rear speakers. Setting one bar against another brand’s complete bundle hides the biggest difference in what you buy.
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 9 of the 31 models checked meet every need here: “My TV has almost no HDMI ports left” and “I plan to buy rear speakers later”.
9 models fit, out of 31 checkedShow the facts and the math
How we countedThe count uses each product's current fit ratings for “My TV has almost no HDMI ports left” 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 |
|---|---|---|---|
| Sony BRAVIA Theater Bar 9 |
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| Sonos Arc Ultra |
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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.
Sony BRAVIA Theater Bar 9
Your setup requires one direct 4K 120 Hz HDMI input.
See price & reviews on AmazonSonos Arc Ultra
Every one of your video sources can plug into the TV.
See price & reviews on AmazonEach link opens in a new tab.
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