Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Marshall - Emberton III | Marshall - Stockwell III |
|---|---|---|
| Output power | 20 W | 30 W |
| Battery | 32 h | 27 h |
| Low-end response | 60 Hz | 50 Hz |
| Water resistance | IP67 | IPX4 |
Between the Emberton III and Stockwell III, the Emberton III comes out ahead in battery / water resistance, while the Stockwell III wins on output power / low-end response. Overall, the Emberton III scores 73.7 and the Stockwell III scores 61.4 on our Mars Score.
Which should you buy?
The Emberton III is the clear pick on raw spec strength, leading by 12.3 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 Emberton III if you care most about battery / water resistance. The biggest gaps in its favor are battery, water resistance. The single most decisive one: Battery — 18.52% more. 32 h vs 27 h.
Pick the Stockwell III 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 — 50.00% more. 30 W vs 20 W.
Both ship with comparable stereo pairing, so those specs do not separate the two — focus on the differences below.
Bottom line: the Emberton III 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 Marshall - Stockwell III?
Marshall - Emberton III leads the current Mars Score by 12.3 points.The more useful decision is the trade-off behind that result: compare output power, battery, water resistance against the way you will actually use the product.
Choose Marshall - Emberton III if…
Marshall - Emberton III has the measurable edge on battery h, ip rating.
Choose Marshall - Stockwell III if…
Marshall - Stockwell III 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 — 18.52% more. 32 h vs 27 h.
- ▲Water resistance: IP67 (vs IPX4).
Why Marshall - Stockwell III wins
- ▲Output power — 50.00% more. 30 W vs 20 W.
- ▲Low-end response — 10.00 Hz less. 50 vs 60.
Spec comparison
Audio
| Spec | Marshall - Emberton III | Marshall - Stockwell III |
|---|---|---|
| Output power | 20 W | 30 Wlead |
| Low-end response | 60 Hz | 50 Hzlead |
| Stereo pairingⓘ | true | true |
Durability
| Spec | Marshall - Emberton III | Marshall - Stockwell III |
|---|---|---|
| Water resistanceⓘ | IP67lead | IPX4 |
| Weight | 700 glead | 1390 g |
Battery
| Spec | Marshall - Emberton III | Marshall - Stockwell III |
|---|---|---|
| Battery | 32 hlead | 27 h |
| USB out (powerbank) | false | false |