Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | JBL - Authentics 300 | Sony - HT-A9 |
|---|---|---|
| Output | 100 W | 504 W |
| Dolby Atmos | false | true |
Between the Authentics 300 and HT-A9, the Authentics 300 comes out ahead in several specs, while the HT-A9 wins on output / dolby atmos. Overall, the Authentics 300 scores 52.5 and the HT-A9 scores 71.1 on our Mars Score.
Which should you buy?
The HT-A9 is the clear pick on raw spec strength, leading by 18.6 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.
The Authentics 300 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 HT-A9 if you care most about output / dolby atmos. Its strongest claims are output, dolby atmos. The single most decisive one: Output — 404.00% more. 504 W vs 100 W.
Both ship with comparable matter / thread, so those specs do not 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.
Which should you buy: JBL - Authentics 300 or Sony - HT-A9?
Sony - HT-A9 leads the current Mars Score by 18.6 points.The more useful decision is the trade-off behind that result: compare output, dolby atmos against the way you will actually use the product.
Choose JBL - Authentics 300 if…
JBL - Authentics 300 does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
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 JBL - Authentics 300 wins
- No decisive advantages.
Why Sony - HT-A9 wins
- ▲Output — 404.00% more. 504 W vs 100 W.
- ▲Has Dolby Atmos.
Spec comparison
Audio
| Spec | JBL - Authentics 300 | Sony - HT-A9 |
|---|---|---|
| Output | 100 W | 504 Wlead |
| Stereo pairingⓘ | true | true |
| Dolby Atmosⓘ | false | truelead |
| Built-in display | false | false |
Assistant & Smart Home
| Spec | JBL - Authentics 300 | Sony - HT-A9 |
|---|---|---|
| Voice assistant | Alexa,Google Assistant | Google Assistant |
| Matter / Thread | false | false |
| Zigbee hub | false | false |