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 87 and the HT-A9 scores 71.1 on our Mars Score.
Which should you buy?
The HomePod (2nd gen) is the clear pick on raw spec strength, leading by 15.9 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 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: the HomePod (2nd gen) is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Apple - HomePod (2nd gen) or Sony - HT-A9?
Apple - HomePod (2nd gen) leads the current Mars Score by 15.9 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 |
| Built-in display | false | false |
Assistant & Smart Home
| Spec | Apple - HomePod (2nd gen) | Sony - HT-A9 |
|---|---|---|
| Voice assistant | Siri | Google Assistant |
| Matter / Thread | truelead | false |
| Zigbee hub | false | false |