Bose - QuietComfort Earbuds (II) vs Master & Dynamic - MW09
Between the QuietComfort Earbuds (II) and MW09, the QuietComfort Earbuds (II) comes out ahead in several specs, while the MW09 wins on battery — buds and battery — with case. Overall, the QuietComfort Earbuds (II) scores 58.4 and the MW09 scores 79.3 on our Mars Score.
Which should you buy?
The MW09 is the clear pick on raw spec strength, leading by 20.9 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.
The QuietComfort Earbuds (II) doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the MW09 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are battery — buds, battery — with case, driver size, among others.
Both ship with comparable active noise cancellation, spatial audio, so those specs don't separate the two — focus on the differences below.
Bottom line: the MW09 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Bose - QuietComfort Earbuds (II) wins
- No decisive advantages.
Why Master & Dynamic - MW09 wins
- ▲Battery — buds — 166.67% more. 16 h vs 6 h.
- ▲Battery — with case — 166.67% more. 48 h vs 18 h.
- ▲Driver size — 18.28% more. 11 mm vs 9.3 mm.
- ▲Has Multipoint.
- ▲Water resistance: IP57 (vs IPX4).
- ▲Weight per bud — 0.20 g less. 6 vs 6.2.
Spec comparison
Design
| Spec | Bose - QuietComfort Earbuds (II) | Master & Dynamic - MW09 |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 6.2 g | 6 glead |
| Water resistanceⓘ | IPX4 | IP57lead |
Audio
| Spec | Bose - QuietComfort Earbuds (II) | Master & Dynamic - MW09 |
|---|---|---|
| Driver sizeⓘ | 9.3 mm | 11 mmlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | false | false |
Battery
| Spec | Bose - QuietComfort Earbuds (II) | Master & Dynamic - MW09 |
|---|---|---|
| Battery — buds | 6 h | 16 hlead |
| Battery — with case | 18 h | 48 hlead |
| Wireless case chargingⓘ | true | true |
Connectivity
| Spec | Bose - QuietComfort Earbuds (II) | Master & Dynamic - MW09 |
|---|---|---|
| Bluetoothⓘ | 5.3 | 5.4lead |
| Codecs | AAC,SBC | aptX Lossless,aptX Adaptive,AAC,SBC |
| Multipointⓘ | false | truelead |
| In-ear detection | true | true |
Frequently asked
Which has longer battery, QuietComfort Earbuds (II) or MW09?+
MW09 lasts 16h per charge vs 6h.
Do QuietComfort Earbuds (II) or MW09 support multipoint?+
MW09 supports multipoint; QuietComfort Earbuds (II) does not.
Which has ANC, QuietComfort Earbuds (II) or MW09?+
Both have active noise cancellation.
Spec-level deep dives
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