Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | JBL - Boombox 3 | Sonos - Roam 2 |
|---|---|---|
| Output power | 180 W | 30 W |
| Battery | 24 h | 10 h |
| Low-end response | 40 Hz | 60 Hz |
Between the Boombox 3 and Roam 2, the Boombox 3 comes out ahead in output power / battery, while the Roam 2 wins on several specs. Overall, the Boombox 3 scores 87.3 and the Roam 2 scores 60.7 on our Mars Score.
Which should you buy?
The Boombox 3 is the clear pick on raw spec strength, leading by 26.6 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 Boombox 3 if you care most about output power / battery. The biggest gaps in its favor are output power, battery, low-end response. The single most decisive one: Output power — 500.00% more. 180 W vs 30 W.
The Roam 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 water resistance, stereo pairing, so those specs do not separate the two — focus on the differences below.
Bottom line: the Boombox 3 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 - Boombox 3 or Sonos - Roam 2?
JBL - Boombox 3 leads the current Mars Score by 26.6 points.The more useful decision is the trade-off behind that result: compare output power, battery against the way you will actually use the product.
Choose JBL - Boombox 3 if…
JBL - Boombox 3 has the measurable edge on output w, battery h, frequency low hz.
Choose Sonos - Roam 2 if…
Sonos - Roam 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 - Boombox 3 wins
- ▲Output power — 500.00% more. 180 W vs 30 W.
- ▲Battery — 140.00% more. 24 h vs 10 h.
- ▲Low-end response — 20.00 Hz less. 40 vs 60.
Why Sonos - Roam 2 wins
- No decisive advantages.
Spec comparison
Audio
| Spec | JBL - Boombox 3 | Sonos - Roam 2 |
|---|---|---|
| Output power | 180 Wlead | 30 W |
| Low-end response | 40 Hzlead | 60 Hz |
| Stereo pairingⓘ | true | true |
Durability
| Spec | JBL - Boombox 3 | Sonos - Roam 2 |
|---|---|---|
| Water resistanceⓘ | IP67 | IP67 |
| Weight | 6500 g | 430 glead |
Battery
| Spec | JBL - Boombox 3 | Sonos - Roam 2 |
|---|---|---|
| Battery | 24 hlead | 10 h |
| USB out (powerbank) | truelead | false |