Between the HW-Q990D and Arc Ultra, the HW-Q990D comes out ahead in subwoofer included and total power, while the Arc Ultra wins on several specs. Overall, the HW-Q990D scores 74.9 and the Arc Ultra scores 35 on our Mars Score.
Which should you buy?
The HW-Q990D is the clear pick on raw spec strength, leading by 39.9 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.
Pick the HW-Q990D if you care most about subwoofer included and total power. The biggest gaps in its favor are subwoofer included, total power.
The Arc Ultra similarly doesn't carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable dolby atmos, earc, so those specs don't separate the two — focus on the differences below.
Bottom line: the HW-Q990D is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Samsung - HW-Q990D wins
- ▲Has Subwoofer included.
- ▲Total power: 656 W vs 0 W.
Why Sonos - Arc Ultra wins
- No decisive advantages.
Spec comparison
Audio
| Spec | Samsung - HW-Q990D | Sonos - Arc Ultra |
|---|---|---|
| Channels | 11.1.4 | 9.1.4 |
| Total power | 656 Wlead | 0 W |
| Dolby Atmosⓘ | true | true |
| DTS:X | truelead | false |
Connectivity
| Spec | Samsung - HW-Q990D | Sonos - Arc Ultra |
|---|---|---|
| HDMI inputs | 2lead | 1 |
| eARCⓘ | true | true |
| Subwoofer included | truelead | false |
Frequently asked
Spec-level deep dives
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