Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | JBL - Link Music | Sonos - Era 300 |
|---|---|---|
| Dolby Atmos | false | true |
| Matter / Thread | false | true |
| Output | 20 W |
Between the Link Music and Era 300, the Link Music comes out ahead in output, while the Era 300 wins on dolby atmos / matter / thread. Overall, the Link Music scores 49.8 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 45.2 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 Link Music if you care most about output. The biggest gaps in its favor are output. The single most decisive one: Output: 20 W vs W.
Pick the Era 300 if you care most about dolby atmos / matter / thread. Its strongest claims are dolby atmos, matter / thread. The single most decisive one: Has Dolby Atmos.
There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.
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 - Link Music or Sonos - Era 300?
Sonos - Era 300 leads the current Mars Score by 45.2 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 JBL - Link Music if…
JBL - Link Music has the measurable edge on output w.
Choose Sonos - Era 300 if…
Sonos - Era 300 has the measurable edge on has dolby atmos, 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 - Link Music wins
- ▲Output: 20 W vs W.
Why Sonos - Era 300 wins
- ▲Has Dolby Atmos.
- ▲Has Matter / Thread.
Spec comparison
Audio
| Spec | JBL - Link Music | Sonos - Era 300 |
|---|---|---|
| Output | 20 Wlead | |
| Stereo pairingⓘ | true | true |
| Dolby Atmosⓘ | false | truelead |
| Built-in display | false | false |
Assistant & Smart Home
| Spec | JBL - Link Music | Sonos - Era 300 |
|---|---|---|
| Voice assistant | Google Assistant | Alexa,Sonos Voice |
| Matter / Thread | false | truelead |
| Zigbee hub | false | false |