Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | JBL - Charge 6 | Marshall - Stockwell III |
|---|---|---|
| Output power | 45 W | 30 W |
| Low-end response | 55 Hz | 50 Hz |
| Battery | 28 h | 27 h |
| Water resistance | IP68 | IPX4 |
Between the Charge 6 and Stockwell III, the Charge 6 comes out ahead in output power / battery, while the Stockwell III wins on low-end response. Overall, the Charge 6 scores 81.9 and the Stockwell III scores 68.6 on our Mars Score.
Which should you buy?
The Charge 6 is the clear pick on raw spec strength, leading by 13.3 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 Charge 6 if you care most about output power / battery. The biggest gaps in its favor are output power, battery, water resistance. The single most decisive one: Output power — 50.00% more. 45 W vs 30 W.
Pick the Stockwell III if you care most about low-end response. Its strongest claims are low-end response. The single most decisive one: Low-end response — 5.00 Hz less. 50 vs 55.
Both ship with comparable stereo pairing, so those specs do not separate the two — focus on the differences below.
Bottom line: the Charge 6 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: JBL - Charge 6 or Marshall - Stockwell III?
JBL - Charge 6 leads the current Mars Score by 13.3 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 JBL - Charge 6 if…
JBL - Charge 6 has the measurable edge on output w, battery h, ip rating.
Choose Marshall - Stockwell III if…
Marshall - Stockwell III has the measurable edge on 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 JBL - Charge 6 wins
- ▲Output power — 50.00% more. 45 W vs 30 W.
- ▲Battery — 3.70% more. 28 h vs 27 h.
- ▲Water resistance: IP68 (vs IPX4).
Why Marshall - Stockwell III wins
- ▲Low-end response — 5.00 Hz less. 50 vs 55.
Spec comparison
Audio
| Spec | JBL - Charge 6 | Marshall - Stockwell III |
|---|---|---|
| Output power | 45 Wlead | 30 W |
| Low-end response | 55 Hz | 50 Hzlead |
| Stereo pairingⓘ | true | true |
Durability
| Spec | JBL - Charge 6 | Marshall - Stockwell III |
|---|---|---|
| Water resistanceⓘ | IP68lead | IPX4 |
| Weight | 1010 glead | 1390 g |
Battery
| Spec | JBL - Charge 6 | Marshall - Stockwell III |
|---|---|---|
| Battery | 28 hlead | 27 h |
| USB out (powerbank) | truelead | false |