Looking for an honest Marshall Stanmore III vs Ultimate Ears Megaboom 3 comparison in 2026? We scored both bluetooth speakers on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Ultimate Ears Megaboom 3 comes out ahead 41/100 to 59/100 — a 18-point gap. The widest gap is in design and build, where the Ultimate Ears Megaboom 3 pulls noticeably ahead. On price the Ultimate Ears Megaboom 3 undercuts the Marshall Stanmore III by 101% ($199 vs $399), which materially changes the value calculus for budget-conscious buyers.

Marshall
Prices may vary · We may earn a commission on purchases. Learn more
Ultimate Ears Megaboom 3 clearly outperforms the Marshall Stanmore III in the bluetooth speakers category, especially in value ($199 vs $399), scoring 59 vs 41. If you want the better overall bluetooth speakers, Ultimate Ears Megaboom 3 is the recommended choice.
Picking Ultimate Ears Megaboom 3 over Marshall Stanmore III means trading these off.
Nada significativo — as especificações são praticamente iguais
$399
Scores are relative within the bluetooth speakerscategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
| Spec | Marshall Stanmore III | Ultimate Ears Megaboom 3W |
|---|---|---|
| Price | 399$ | 199$✓ |
| Battery Life | 12hrs | 20hrs✓ |
| Bluetooth | 5.3 | 5.0 |
| Weight | 2500g | 960g✓ |
| Dimensions | 350 x 200 x 150 mm | 225 x 88 x 88 mm |
| Colors | Black, Cream | Black, Blue, Red |
Buy Marshall Stanmore III if…
The Marshall Stanmore III is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Buy Ultimate Ears Megaboom 3 if…
Buy the Ultimate Ears Megaboom 3 if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Ultimate Ears Megaboom 3 clearly outperforms the Marshall Stanmore III in the bluetooth speakers category, especially in value ($199 vs $399), scoring 59 vs 41. If you want the better overall bluetooth speakers, Ultimate Ears Megaboom 3 is the recommended choice.
No, Ultimate Ears Megaboom 3 scores higher (59 vs 41).
Ultimate Ears Megaboom 3 is cheaper at $199 vs $399 for the Marshall Stanmore III.
The Marshall Stanmore III is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Buy the Ultimate Ears Megaboom 3 if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Ultimate Ears Megaboom 3 lasts longer with 20 hours vs 12 hours for the other.
Ultimate Ears Megaboom 3 is lighter at 960g vs 2500g.
Reviewed by VersusMatrix Editorial Team
Last updated: May 10, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.