Between the Boombox 3 and Xtreme 4, the Boombox 3 comes out ahead in output power and low-end response, while the Xtreme 4 wins on several specs. Overall, the Boombox 3 scores 86.4 and the Xtreme 4 scores 73.9 on our Mars Score.
Which should you buy?
The Boombox 3 is the clear pick on raw spec strength, leading by 12.5 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 and low-end response. The biggest gaps in its favor are output power, low-end response.
The Xtreme 4 similarly doesn't carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable battery, water resistance, stereo pairing, so those specs don't 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.
Why JBL - Boombox 3 wins
- ▲Output power — 80.00% more. 180 W vs 100 W.
- ▲Low-end response — 13.00 Hz less. 40 vs 53.
Why JBL - Xtreme 4 wins
- No decisive advantages.
Spec comparison
Audio
| Spec | JBL - Boombox 3 | JBL - Xtreme 4 |
|---|---|---|
| Output power | 180 Wlead | 100 W |
| Low-end response | 40 Hzlead | 53 Hz |
| Stereo pairing | true | true |
Durability
| Spec | JBL - Boombox 3 | JBL - Xtreme 4 |
|---|---|---|
| Water resistanceⓘ | IP67 | IP67 |
| Weight | 6500 g | 2150 glead |
Battery
| Spec | JBL - Boombox 3 | JBL - Xtreme 4 |
|---|---|---|
| Battery | 24 h | 24 h |
| USB out (powerbank) | true | true |
Spec-level deep dives
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