Between the HW-Q990D and HW-S800D, the HW-Q990D comes out ahead in total power / earc, while the HW-S800D wins on several specs. Overall, the HW-Q990D scores 74.9 and the HW-S800D scores 53.8 on our Mars Score.
Which should you buy?
The HW-Q990D is the clear pick on raw spec strength, leading by 21.1 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 total power / earc. The biggest gaps in its favor are total power, earc.
The HW-S800D similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable dolby atmos, subwoofer included, so those specs do not 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
- ▲Total power — 98.79% more. 656 W vs 330 W.
- ▲Has eARC.
Why Samsung - HW-S800D wins
- No decisive advantages.
Spec comparison
Audio
| Spec | Samsung - HW-Q990D | Samsung - HW-S800D |
|---|---|---|
| Channels | 11.1.4 | 3.1.2 |
| Total power | 656 Wlead | 330 W |
| Dolby Atmosⓘ | true | true |
| DTS:X | truelead | false |
Connectivity
| Spec | Samsung - HW-Q990D | Samsung - HW-S800D |
|---|---|---|
| HDMI inputs | 2lead | 0 |
| eARCⓘ | truelead | false |
| Subwoofer included | true | true |
Spec-level deep dives
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