Between the Era 300 and HT-A9, the Era 300 comes out ahead in matter / thread, while the HT-A9 wins on output. Overall, the Era 300 scores 35 and the HT-A9 scores 95 on our Mars Score.
Which should you buy?
The HT-A9 is the clear pick on raw spec strength, leading by 60.0 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 Era 300 if you care most about matter / thread. The biggest gaps in its favor are matter / thread.
Pick the HT-A9 if you care most about output. Its strongest claims are output.
Both ship with comparable dolby atmos, so those specs don't separate the two — focus on the differences below.
Bottom line: the HT-A9 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Sonos - Era 300 wins
- ▲Has Matter / Thread.
Why Sony - HT-A9 wins
- ▲Output: 504 W vs 0 W.
Spec comparison
Audio
| Spec | Sonos - Era 300 | Sony - HT-A9 |
|---|---|---|
| Output | 0 W | 504 Wlead |
| Stereo pairing | true | true |
| Dolby Atmosⓘ | true | true |
Assistant & Smart Home
| Spec | Sonos - Era 300 | Sony - HT-A9 |
|---|---|---|
| Voice assistant | Alexa,Sonos Voice | Google Assistant |
| Matter / Thread | truelead | false |
| Zigbee hub | false | false |
Frequently asked
Spec-level deep dives
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