Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Marshall - Stockwell III | Logitech - BOOM 4 |
|---|---|---|
| Low-end response | 50 Hz | 90 Hz |
| Battery | 27 h | 20 h |
| Water resistance | IPX4 | IP67 |
| Output power | 30 W |
Between the Stockwell III and BOOM 4, the Stockwell III comes out ahead in low-end response / battery, while the BOOM 4 wins on water resistance. Overall, the Stockwell III scores 68.6 and the BOOM 4 scores 66.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (68.6 vs 66.9). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Stockwell III if you care most about low-end response / battery. The biggest gaps in its favor are low-end response, battery, output power. The single most decisive one: Low-end response — 40.00 Hz less. 50 vs 90.
Pick the BOOM 4 if you care most about water resistance. Its strongest claims are water resistance. The single most decisive one: Water resistance: IP67 (vs IPX4).
Both ship with comparable 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: Marshall - Stockwell III or Logitech - BOOM 4?
Marshall - Stockwell III leads the current Mars Score by 1.7 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 - Stockwell III if…
Marshall - Stockwell III has the measurable edge on frequency low hz, battery h, output w.
Choose Logitech - BOOM 4 if…
Logitech - BOOM 4 has the measurable edge on ip rating.
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 - Stockwell III wins
- ▲Low-end response — 40.00 Hz less. 50 vs 90.
- ▲Battery — 35.00% more. 27 h vs 20 h.
- ▲Output power: 30 W vs W.
Why Logitech - BOOM 4 wins
- ▲Water resistance: IP67 (vs IPX4).
Spec comparison
Audio
| Spec | Marshall - Stockwell III | Logitech - BOOM 4 |
|---|---|---|
| Output power | 30 Wlead | |
| Low-end response | 50 Hzlead | 90 Hz |
| Stereo pairingⓘ | true | true |
Durability
| Spec | Marshall - Stockwell III | Logitech - BOOM 4 |
|---|---|---|
| Water resistanceⓘ | IPX4 | IP67lead |
| Weight | 1390 g | 646 glead |
Battery
| Spec | Marshall - Stockwell III | Logitech - BOOM 4 |
|---|---|---|
| Battery | 27 hlead | 20 h |
| USB out (powerbank) | false | false |