Between the Emberton III and Stockwell III, the Emberton III comes out ahead in battery and water resistance, while the Stockwell III wins on output power and low-end response. Overall, the Emberton III scores 66.8 and the Stockwell III scores 65.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (66.8 vs 65.3). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Emberton III if you care most about battery and water resistance. The biggest gaps in its favor are battery, water resistance.
Pick the Stockwell III if you care most about output power and low-end response. Its strongest claims are output power, low-end response.
Both ship with comparable stereo pairing, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
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 |
Spec-level deep dives
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