Between the Boombox 3 and Emberton III, the Boombox 3 comes out ahead in output power and low-end response, while the Emberton III wins on battery. Overall, the Boombox 3 scores 86.4 and the Emberton III scores 66.8 on our Mars Score.
Which should you buy?
The Boombox 3 is the clear pick on raw spec strength, leading by 19.6 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 and low-end response. The biggest gaps in its favor are output power, low-end response.
Pick the Emberton III if you care most about battery. Its strongest claims are battery.
Both ship with comparable 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 — 800.00% more. 180 W vs 20 W.
- ▲Low-end response — 20.00 Hz less. 40 vs 60.
Why Marshall - Emberton III wins
- ▲Battery — 33.33% more. 32 h vs 24 h.
Spec comparison
Audio
| Spec | JBL - Boombox 3 | Marshall - Emberton III |
|---|---|---|
| Output power | 180 Wlead | 20 W |
| Low-end response | 40 Hzlead | 60 Hz |
| Stereo pairing | true | true |
Durability
| Spec | JBL - Boombox 3 | Marshall - Emberton III |
|---|---|---|
| Water resistanceⓘ | IP67 | IP67 |
| Weight | 6500 g | 700 glead |
Battery
| Spec | JBL - Boombox 3 | Marshall - Emberton III |
|---|---|---|
| Battery | 24 h | 32 hlead |
| USB out (powerbank) | truelead | false |
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.