Between the Éclair QP5 and Arc Ultra, the Éclair QP5 comes out ahead in subwoofer included and total power, while the Arc Ultra wins on several specs. Overall, the Éclair QP5 scores 53.1 and the Arc Ultra scores 35 on our Mars Score.
Which should you buy?
The Éclair QP5 is the clear pick on raw spec strength, leading by 18.1 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 Éclair QP5 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 Éclair QP5 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why LG - Éclair QP5 wins
- ▲Has Subwoofer included.
- ▲Total power: 320 W vs 0 W.
Why Sonos - Arc Ultra wins
- No decisive advantages.
Spec comparison
Audio
| Spec | LG - Éclair QP5 | Sonos - Arc Ultra |
|---|---|---|
| Channels | 3.1.2 | 9.1.4 |
| Total power | 320 Wlead | 0 W |
| Dolby Atmosⓘ | true | true |
| DTS:X | false | false |
Connectivity
| Spec | LG - Éclair QP5 | Sonos - Arc Ultra |
|---|---|---|
| HDMI inputs | 1 | 1 |
| eARCⓘ | true | true |
| Subwoofer included | truelead | false |
Spec-level deep dives
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