Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | JBL - Flip 7 | Marshall - Stockwell III |
|---|---|---|
| Battery | 16 h | 27 h |
| Output power | 35 W | 30 W |
| Low-end response | 60 Hz | 50 Hz |
| Water resistance | IP68 | IPX4 |
Between the Flip 7 and Stockwell III, the Flip 7 comes out ahead in output power / water resistance, while the Stockwell III wins on battery / low-end response. Overall, the Flip 7 scores 72.3 and the Stockwell III scores 68.6 on our Mars Score.
Which should you buy?
The Flip 7 edges ahead on the Mars Score (72.3 vs 68.6), but the 3.7-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Flip 7 if you care most about output power / water resistance. The biggest gaps in its favor are output power, water resistance. The single most decisive one: Output power — 16.67% more. 35 W vs 30 W.
Pick the Stockwell III if you care most about battery / low-end response. Its strongest claims are battery, low-end response. The single most decisive one: Battery — 68.75% more. 27 h vs 16 h.
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: JBL - Flip 7 or Marshall - Stockwell III?
JBL - Flip 7 leads the current Mars Score by 3.7 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 JBL - Flip 7 if…
JBL - Flip 7 has the measurable edge on output w, ip rating.
Choose Marshall - Stockwell III if…
Marshall - Stockwell III has the measurable edge on battery h, 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 - Flip 7 wins
- ▲Output power — 16.67% more. 35 W vs 30 W.
- ▲Water resistance: IP68 (vs IPX4).
Why Marshall - Stockwell III wins
- ▲Battery — 68.75% more. 27 h vs 16 h.
- ▲Low-end response — 10.00 Hz less. 50 vs 60.
Spec comparison
Audio
| Spec | JBL - Flip 7 | Marshall - Stockwell III |
|---|---|---|
| Output power | 35 Wlead | 30 W |
| Low-end response | 60 Hz | 50 Hzlead |
| Stereo pairingⓘ | true | true |
Durability
| Spec | JBL - Flip 7 | Marshall - Stockwell III |
|---|---|---|
| Water resistanceⓘ | IP68lead | IPX4 |
| Weight | 560 glead | 1390 g |
Battery
| Spec | JBL - Flip 7 | Marshall - Stockwell III |
|---|---|---|
| Battery | 16 h | 27 hlead |
| USB out (powerbank) | false | false |