Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Sonos - Arc Ultra | Sony - Bravia Theater Bar 9 |
|---|---|---|
| Total power | 460 W |
Between the Arc Ultra and Bravia Theater Bar 9, the Arc Ultra comes out ahead in several specs, while the Bravia Theater Bar 9 wins on total power. Overall, the Arc Ultra scores 85.9 and the Bravia Theater Bar 9 scores 75.5 on our Mars Score.
Which should you buy?
The Arc Ultra is the clear pick on raw spec strength, leading by 10.4 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
The Arc Ultra does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the Bravia Theater Bar 9 if you care most about total power. Its strongest claims are total power. The single most decisive one: Total power: 460 W vs W.
Both ship with comparable dolby atmos, earc, subwoofer included, so those specs do not separate the two — focus on the differences below.
Bottom line: the Arc Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Sonos - Arc Ultra or Sony - Bravia Theater Bar 9?
Sonos - Arc Ultra leads the current Mars Score by 10.4 points.The more useful decision is the trade-off behind that result: compare total power against the way you will actually use the product.
Choose Sonos - Arc Ultra if…
Sonos - Arc Ultra does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Sony - Bravia Theater Bar 9 if…
Sony - Bravia Theater Bar 9 has the measurable edge on total w.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Sonos - Arc Ultra wins
- No decisive advantages.
Why Sony - Bravia Theater Bar 9 wins
- ▲Total power: 460 W vs W.
Spec comparison
Audio
| Spec | Sonos - Arc Ultra | Sony - Bravia Theater Bar 9 |
|---|---|---|
| Channels | 9.1.4 | 7.0.2 |
| Total power | 460 Wlead | |
| Dolby Atmosⓘ | true | true |
| DTS:X | false | truelead |
Connectivity
| Spec | Sonos - Arc Ultra | Sony - Bravia Theater Bar 9 |
|---|---|---|
| HDMI inputs | 1 | 1 |
| eARCⓘ | true | true |
| Subwoofer included | false | false |