Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Sonos - Era 100 | Sonos - Era 300 |
|---|---|---|
| Dolby Atmos | false | true |
Between the Era 100 and Era 300, the Era 100 comes out ahead in several specs, while the Era 300 wins on dolby atmos. Overall, the Era 100 scores 80.6 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 14.4 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 Era 100 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 Era 300 if you care most about dolby atmos. Its strongest claims are dolby atmos. The single most decisive one: Has Dolby Atmos.
Both ship with comparable output, voice assistant, matter / thread, 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: Sonos - Era 100 or Sonos - Era 300?
Sonos - Era 300 leads the current Mars Score by 14.4 points.The more useful decision is the trade-off behind that result: compare dolby atmos against the way you will actually use the product.
Choose Sonos - Era 100 if…
Sonos - Era 100 does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Sonos - Era 300 if…
Sonos - Era 300 has the measurable edge on 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 Sonos - Era 100 wins
- No decisive advantages.
Why Sonos - Era 300 wins
- ▲Has Dolby Atmos.
Spec comparison
Audio
| Spec | Sonos - Era 100 | Sonos - Era 300 |
|---|---|---|
| Output | ||
| Stereo pairingⓘ | true | true |
| Dolby Atmosⓘ | false | truelead |
| Built-in display | false | false |
Assistant & Smart Home
| Spec | Sonos - Era 100 | Sonos - Era 300 |
|---|---|---|
| Voice assistant | Alexa,Sonos Voice | Alexa,Sonos Voice |
| Matter / Thread | true | true |
| Zigbee hub | false | false |