Between the Stockwell III and Motion X600, the Stockwell III comes out ahead in battery and low-end response, while the Motion X600 wins on output power and water resistance. Overall, the Stockwell III scores 65.3 and the Motion X600 scores 52.8 on our Mars Score.
Which should you buy?
The Stockwell III is the clear pick on raw spec strength, leading by 12.5 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 Stockwell III if you care most about battery and low-end response. The biggest gaps in its favor are battery, low-end response.
Pick the Motion X600 if you care most about output power and water resistance. Its strongest claims are output power, water resistance.
Both ship with comparable stereo pairing, so those specs don't separate the two — focus on the differences below.
Bottom line: the Stockwell III is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Marshall - Stockwell III wins
- ▲Battery — 125.00% more. 27 h vs 12 h.
- ▲Low-end response — 10.00 Hz less. 50 vs 60.
Why Anker - Motion X600 wins
- ▲Output power — 66.67% more. 50 W vs 30 W.
- ▲Water resistance: IPX7 (vs IPX4).
Spec comparison
Audio
| Spec | Marshall - Stockwell III | Anker - Motion X600 |
|---|---|---|
| Output power | 30 W | 50 Wlead |
| Low-end response | 50 Hzlead | 60 Hz |
| Stereo pairing | true | true |
Durability
| Spec | Marshall - Stockwell III | Anker - Motion X600 |
|---|---|---|
| Water resistanceⓘ | IPX4 | IPX7lead |
| Weight | 1390 glead | 1980 g |
Battery
| Spec | Marshall - Stockwell III | Anker - Motion X600 |
|---|---|---|
| Battery | 27 hlead | 12 h |
| USB out (powerbank) | false | false |
Frequently asked
Spec-level deep dives
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