JBL - Authentics 300 vs Sonos - Symfonisk Bookshelf (Gen 2)
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | JBL - Authentics 300 | Sonos - Symfonisk Bookshelf (Gen 2) |
|---|---|---|
| Output | 100 W |
Between the Authentics 300 and Symfonisk Bookshelf (Gen 2), the Authentics 300 comes out ahead in output, while the Symfonisk Bookshelf (Gen 2) wins on several specs. Overall, the Authentics 300 scores 52.5 and the Symfonisk Bookshelf (Gen 2) scores 55 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (52.5 vs 55). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Authentics 300 if you care most about output. The biggest gaps in its favor are output. The single most decisive one: Output: 100 W vs W.
The Symfonisk Bookshelf (Gen 2) similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
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 300 or Sonos - Symfonisk Bookshelf (Gen 2)?
Sonos - Symfonisk Bookshelf (Gen 2) leads the current Mars Score by 2.5 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 300 if…
JBL - Authentics 300 has the measurable edge on output w.
Choose Sonos - Symfonisk Bookshelf (Gen 2) if…
Sonos - Symfonisk Bookshelf (Gen 2) does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
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
- ▲Output: 100 W vs W.
Why Sonos - Symfonisk Bookshelf (Gen 2) wins
- No decisive advantages.
Spec comparison
Audio
| Spec | JBL - Authentics 300 | Sonos - Symfonisk Bookshelf (Gen 2) |
|---|---|---|
| Output | 100 Wlead | |
| Stereo pairingⓘ | true | true |
| Dolby Atmosⓘ | false | false |
| Built-in display | false | false |
Assistant & Smart Home
| Spec | JBL - Authentics 300 | Sonos - Symfonisk Bookshelf (Gen 2) |
|---|---|---|
| Voice assistant | Alexa,Google Assistant | Alexa |
| Matter / Thread | false | false |
| Zigbee hub | false | false |