Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | JBL - Authentics 500 | Sonos - Era 300 |
|---|---|---|
| Matter / Thread | false | true |
| Output | 270 W |
Between the Authentics 500 and Era 300, the Authentics 500 comes out ahead in output, while the Era 300 wins on matter / thread. Overall, the Authentics 500 scores 68.7 and the Era 300 scores 95 on our Mars Score.
Which should you buy?
The Era 300 is the clear pick on raw spec strength, leading by 26.3 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 Authentics 500 if you care most about output. The biggest gaps in its favor are output. The single most decisive one: Output: 270 W vs W.
Pick the Era 300 if you care most about matter / thread. Its strongest claims are matter / thread. The single most decisive one: Has Matter / Thread.
Both ship with comparable dolby atmos, so those specs do not separate the two — focus on the differences below.
Bottom line: the Era 300 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 500 or Sonos - Era 300?
Sonos - Era 300 leads the current Mars Score by 26.3 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 JBL - Authentics 500 if…
JBL - Authentics 500 has the measurable edge on output w.
Choose Sonos - Era 300 if…
Sonos - Era 300 has the measurable edge on has matter thread.
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
- ▲Output: 270 W vs W.
Why Sonos - Era 300 wins
- ▲Has Matter / Thread.
Spec comparison
Audio
| Spec | JBL - Authentics 500 | Sonos - Era 300 |
|---|---|---|
| Output | 270 Wlead | |
| Stereo pairingⓘ | true | true |
| Dolby Atmosⓘ | true | true |
| Built-in display | false | false |
Assistant & Smart Home
| Spec | JBL - Authentics 500 | Sonos - Era 300 |
|---|---|---|
| Voice assistant | Alexa,Google Assistant | Alexa,Sonos Voice |
| Matter / Thread | false | truelead |
| Zigbee hub | false | false |