Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Sonos - Arc Ultra | TCL - Q85H Pro |
|---|---|---|
| Subwoofer included | false | true |
| Total power | 590 W |
Between the Arc Ultra and Q85H Pro, the Arc Ultra comes out ahead in several specs, while the Q85H Pro wins on subwoofer included / total power. Overall, the Arc Ultra scores 85.9 and the Q85H Pro scores 87.4 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (85.9 vs 87.4). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
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 Q85H Pro if you care most about subwoofer included / total power. Its strongest claims are subwoofer included, total power. The single most decisive one: Has Subwoofer included.
Both ship with comparable dolby atmos, earc, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Sonos - Arc Ultra or TCL - Q85H Pro?
TCL - Q85H Pro leads the current Mars Score by 1.5 points.The more useful decision is the trade-off behind that result: compare total power, subwoofer included 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 TCL - Q85H Pro if…
TCL - Q85H Pro has the measurable edge on subwoofer included, 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 TCL - Q85H Pro wins
- ▲Has Subwoofer included.
- ▲Total power: 590 W vs W.
Spec comparison
Audio
| Spec | Sonos - Arc Ultra | TCL - Q85H Pro |
|---|---|---|
| Channels | 9.1.4 | 5.1.2 |
| Total power | 590 Wlead | |
| Dolby Atmosⓘ | true | true |
| DTS:X | false | truelead |
Connectivity
| Spec | Sonos - Arc Ultra | TCL - Q85H Pro |
|---|---|---|
| HDMI inputs | 1 | 1 |
| eARCⓘ | true | true |
| Subwoofer included | false | truelead |