Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | JBL - Authentics 500 | Sony - HT-A9 |
|---|---|---|
| Output | 270 W | 504 W |
Between the Authentics 500 and HT-A9, the Authentics 500 comes out ahead in several specs, while the HT-A9 wins on output. Overall, the Authentics 500 scores 68.7 and the HT-A9 scores 71.1 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (68.7 vs 71.1). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
The Authentics 500 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. Its strongest claims are output. The single most decisive one: Output — 86.67% more. 504 W vs 270 W.
Both ship with comparable dolby atmos, matter / thread, 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: JBL - Authentics 500 or Sony - HT-A9?
Sony - HT-A9 leads the current Mars Score by 2.4 points.The more useful decision is the trade-off behind that result: compare output against the way you will actually use the product.
Choose JBL - Authentics 500 if…
JBL - Authentics 500 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.
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 500 wins
- No decisive advantages.
Why Sony - HT-A9 wins
- ▲Output — 86.67% more. 504 W vs 270 W.
Spec comparison
Audio
| Spec | JBL - Authentics 500 | Sony - HT-A9 |
|---|---|---|
| Output | 270 W | 504 Wlead |
| Stereo pairingⓘ | true | true |
| Dolby Atmosⓘ | true | true |
| Built-in display | false | false |
Assistant & Smart Home
| Spec | JBL - Authentics 500 | Sony - HT-A9 |
|---|---|---|
| Voice assistant | Alexa,Google Assistant | Google Assistant |
| Matter / Thread | false | false |
| Zigbee hub | false | false |