Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Amazon - Echo Show 10 (3rd gen) | Sony - HT-A9 |
|---|---|---|
| Output | 30 W | 504 W |
| Matter / Thread | true | false |
| Dolby Atmos | false | true |
Between the Echo Show 10 (3rd gen) and HT-A9, the Echo Show 10 (3rd gen) comes out ahead in matter / thread, while the HT-A9 wins on output / dolby atmos. Overall, the Echo Show 10 (3rd gen) scores 76.4 and the HT-A9 scores 71.1 on our Mars Score.
Which should you buy?
The Echo Show 10 (3rd gen) edges ahead on the Mars Score (76.4 vs 71.1), but the 5.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Echo Show 10 (3rd 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 / dolby atmos. Its strongest claims are output, dolby atmos. The single most decisive one: Output — 1580.00% more. 504 W vs 30 W.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
Bottom line: the Echo Show 10 (3rd 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: Amazon - Echo Show 10 (3rd gen) or Sony - HT-A9?
Amazon - Echo Show 10 (3rd gen) leads the current Mars Score by 5.3 points.The more useful decision is the trade-off behind that result: compare output, dolby atmos, matter / thread against the way you will actually use the product.
Choose Amazon - Echo Show 10 (3rd gen) if…
Amazon - Echo Show 10 (3rd gen) has the measurable edge on has matter thread.
Choose Sony - HT-A9 if…
Sony - HT-A9 has the measurable edge on output w, has dolby atmos.
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 Amazon - Echo Show 10 (3rd gen) wins
- ▲Has Matter / Thread.
Why Sony - HT-A9 wins
- ▲Output — 1580.00% more. 504 W vs 30 W.
- ▲Has Dolby Atmos.
Spec comparison
Audio
| Spec | Amazon - Echo Show 10 (3rd gen) | Sony - HT-A9 |
|---|---|---|
| Output | 30 W | 504 Wlead |
| Stereo pairingⓘ | true | true |
| Dolby Atmosⓘ | false | truelead |
| Built-in display | truelead | false |
Assistant & Smart Home
| Spec | Amazon - Echo Show 10 (3rd gen) | Sony - HT-A9 |
|---|---|---|
| Voice assistant | Alexa | Google Assistant |
| Matter / Thread | truelead | false |
| Zigbee hub | truelead | false |