Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Apple - HomePod (2nd gen) | Sony - HT-A9 |
|---|---|---|
| Output | 60 W | 504 W |
| Matter / Thread | true | false |
Between the HomePod (2nd gen) and HT-A9, the HomePod (2nd gen) comes out ahead in matter / thread, while the HT-A9 wins on output. Overall, the HomePod (2nd gen) scores 70.5 and the HT-A9 scores 71.1 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.5 vs 71.1). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the HomePod (2nd gen) if you care most about matter / thread. The biggest gaps in its favor are matter / thread. The single most decisive one: Has Matter / Thread.
Pick the HT-A9 if you care most about output. Its strongest claims are output. The single most decisive one: Output — 740.00% more. 504 W vs 60 W.
Both ship with comparable dolby atmos, 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: Apple - HomePod (2nd gen) or Sony - HT-A9?
Sony - HT-A9 leads the current Mars Score by 0.6 points.The more useful decision is the trade-off behind that result: compare output, matter / thread against the way you will actually use the product.
Choose Apple - HomePod (2nd gen) if…
Apple - HomePod (2nd gen) has the measurable edge on has matter thread.
Choose Sony - HT-A9 if…
Sony - HT-A9 has the measurable edge on output 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 Apple - HomePod (2nd gen) wins
- ▲Has Matter / Thread.
Why Sony - HT-A9 wins
- ▲Output — 740.00% more. 504 W vs 60 W.
Spec comparison
Audio
| Spec | Apple - HomePod (2nd gen) | Sony - HT-A9 |
|---|---|---|
| Output | 60 W | 504 Wlead |
| Stereo pairingⓘ | true | true |
| Dolby Atmosⓘ | true | true |
Assistant & Smart Home
| Spec | Apple - HomePod (2nd gen) | Sony - HT-A9 |
|---|---|---|
| Voice assistant | Siri | Google Assistant |
| Matter / Thread | truelead | false |
| Zigbee hub | false | false |