Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Marshall - Emberton III | Anker - Boom 2 Plus |
|---|---|---|
| Output power | 20 W | 140 W |
| Battery | 32 h | 20 h |
| Low-end response | 60 Hz | 45 Hz |
Between the Emberton III and Boom 2 Plus, the Emberton III comes out ahead in battery, while the Boom 2 Plus wins on output power / low-end response. Overall, the Emberton III scores 73.7 and the Boom 2 Plus scores 80.3 on our Mars Score.
Which should you buy?
The Boom 2 Plus edges ahead on the Mars Score (73.7 vs 80.3), but the 6.6-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Emberton III if you care most about battery. The biggest gaps in its favor are battery. The single most decisive one: Battery — 60.00% more. 32 h vs 20 h.
Pick the Boom 2 Plus if you care most about output power / low-end response. Its strongest claims are output power, low-end response. The single most decisive one: Output power — 600.00% more. 140 W vs 20 W.
Both ship with comparable water resistance, stereo pairing, so those specs do not separate the two — focus on the differences below.
Bottom line: the Boom 2 Plus 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: Marshall - Emberton III or Anker - Boom 2 Plus?
Anker - Boom 2 Plus leads the current Mars Score by 6.6 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 Marshall - Emberton III if…
Marshall - Emberton III has the measurable edge on battery h.
Choose Anker - Boom 2 Plus if…
Anker - Boom 2 Plus has the measurable edge on output w, frequency low hz.
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 Marshall - Emberton III wins
- ▲Battery — 60.00% more. 32 h vs 20 h.
Why Anker - Boom 2 Plus wins
- ▲Output power — 600.00% more. 140 W vs 20 W.
- ▲Low-end response — 15.00 Hz less. 45 vs 60.
Spec comparison
Audio
| Spec | Marshall - Emberton III | Anker - Boom 2 Plus |
|---|---|---|
| Output power | 20 W | 140 Wlead |
| Low-end response | 60 Hz | 45 Hzlead |
| Stereo pairingⓘ | true | true |
Durability
| Spec | Marshall - Emberton III | Anker - Boom 2 Plus |
|---|---|---|
| Water resistanceⓘ | IP67 | IP67 |
| Weight | 700 glead | 2700 g |
Battery
| Spec | Marshall - Emberton III | Anker - Boom 2 Plus |
|---|---|---|
| Battery | 32 hlead | 20 h |
| USB out (powerbank) | false | truelead |