Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | JBL - Xtreme 4 | Marshall - Emberton III |
|---|---|---|
| Output power | 100 W | 20 W |
| Battery | 24 h | 32 h |
| Low-end response | 53 Hz | 60 Hz |
Between the Xtreme 4 and Emberton III, the Xtreme 4 comes out ahead in output power / low-end response, while the Emberton III wins on battery. Overall, the Xtreme 4 scores 78.6 and the Emberton III scores 73.7 on our Mars Score.
Which should you buy?
The Xtreme 4 edges ahead on the Mars Score (78.6 vs 73.7), but the 4.9-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Xtreme 4 if you care most about output power / low-end response. The biggest gaps in its favor are output power, low-end response. The single most decisive one: Output power — 400.00% more. 100 W vs 20 W.
Pick the Emberton III if you care most about battery. Its strongest claims are battery. The single most decisive one: Battery — 33.33% more. 32 h vs 24 h.
Both ship with comparable water resistance, stereo pairing, 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 - Xtreme 4 or Marshall - Emberton III?
JBL - Xtreme 4 leads the current Mars Score by 4.9 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 - Xtreme 4 if…
JBL - Xtreme 4 has the measurable edge on output w, frequency low hz.
Choose Marshall - Emberton III if…
Marshall - Emberton III has the measurable edge on battery h.
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 - Xtreme 4 wins
- ▲Output power — 400.00% more. 100 W vs 20 W.
- ▲Low-end response — 7.00 Hz less. 53 vs 60.
Why Marshall - Emberton III wins
- ▲Battery — 33.33% more. 32 h vs 24 h.
Spec comparison
Audio
| Spec | JBL - Xtreme 4 | Marshall - Emberton III |
|---|---|---|
| Output power | 100 Wlead | 20 W |
| Low-end response | 53 Hzlead | 60 Hz |
| Stereo pairingⓘ | true | true |
Durability
| Spec | JBL - Xtreme 4 | Marshall - Emberton III |
|---|---|---|
| Water resistanceⓘ | IP67 | IP67 |
| Weight | 2150 g | 700 glead |
Battery
| Spec | JBL - Xtreme 4 | Marshall - Emberton III |
|---|---|---|
| Battery | 24 h | 32 hlead |
| USB out (powerbank) | truelead | false |