Google - Pixel Buds A-Series vs Bose - QuietComfort Ultra Earbuds 2
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Google - Pixel Buds A-Series | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Driver size | 12 mm | 9.3 mm |
| Battery — buds | 5 h | 6 h |
| Weight per bud | 5.1 g | 6.2 g |
| Active noise cancellation | false | true |
| Spatial audio | false | true |
| Multipoint | false | true |
Between the Pixel Buds A-Series and QuietComfort Ultra Earbuds 2, the Pixel Buds A-Series comes out ahead in driver size / weight per bud, while the QuietComfort Ultra Earbuds 2 wins on battery — buds / active noise cancellation. Overall, the Pixel Buds A-Series scores 58.2 and the QuietComfort Ultra Earbuds 2 scores 70.9 on our Mars Score.
Which should you buy?
The QuietComfort Ultra Earbuds 2 is the clear pick on raw spec strength, leading by 12.7 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 Pixel Buds A-Series if you care most about driver size / weight per bud. The biggest gaps in its favor are driver size, weight per bud. The single most decisive one: Driver size — 29.03% more. 12 mm vs 9.3 mm.
Pick the QuietComfort Ultra Earbuds 2 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, active noise cancellation, spatial audio, among others. The single most decisive one: Battery — buds — 20.00% more. 6 h vs 5 h.
Both ship with comparable battery — with case, water resistance, so those specs do not separate the two — focus on the differences below.
Bottom line: the QuietComfort Ultra Earbuds 2 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: Google - Pixel Buds A-Series or Bose - QuietComfort Ultra Earbuds 2?
Bose - QuietComfort Ultra Earbuds 2 leads the current Mars Score by 12.7 points.The more useful decision is the trade-off behind that result: compare driver size, battery — buds, weight per bud against the way you will actually use the product.
Choose Google - Pixel Buds A-Series if…
Google - Pixel Buds A-Series has the measurable edge on driver size mm, weight per bud g.
Choose Bose - QuietComfort Ultra Earbuds 2 if…
Bose - QuietComfort Ultra Earbuds 2 has the measurable edge on battery life buds h, has anc, has spatial audio.
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 Google - Pixel Buds A-Series wins
- ▲Driver size — 29.03% more. 12 mm vs 9.3 mm.
- ▲Weight per bud — 1.10 g less. 5.1 vs 6.2.
Why Bose - QuietComfort Ultra Earbuds 2 wins
- ▲Battery — buds — 20.00% more. 6 h vs 5 h.
- ▲Has Active noise cancellation.
- ▲Has Spatial audio.
- ▲Has Multipoint.
Spec comparison
Design
| Spec | Google - Pixel Buds A-Series | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 5.1 glead | 6.2 g |
| Water resistanceⓘ | IPX4 | IPX4 |
Audio
| Spec | Google - Pixel Buds A-Series | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Driver sizeⓘ | 12 mmlead | 9.3 mm |
| Active noise cancellationⓘ | false | truelead |
| Transparency mode | false | truelead |
| Spatial audioⓘ | false | truelead |
Battery
| Spec | Google - Pixel Buds A-Series | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Battery — buds | 5 h | 6 hlead |
| Battery — with case | 24 h | 24 h |
| Wireless case chargingⓘ | false | truelead |
Connectivity
| Spec | Google - Pixel Buds A-Series | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Bluetoothⓘ | 5.0 | 5.4lead |
| Codecsⓘ | AAC,SBC | aptX Adaptive,AAC,SBC |
| Multipointⓘ | false | truelead |
| In-ear detection | false | truelead |
Frequently asked
Which has longer battery, Pixel Buds A-Series or QuietComfort Ultra Earbuds 2?+
QuietComfort Ultra Earbuds 2 lasts 6h per charge vs 5h.
Do Pixel Buds A-Series or QuietComfort Ultra Earbuds 2 support multipoint?+
QuietComfort Ultra Earbuds 2 supports multipoint pairing; Pixel Buds A-Series does not.
Which has ANC, Pixel Buds A-Series or QuietComfort Ultra Earbuds 2?+
QuietComfort Ultra Earbuds 2 has active noise cancellation; Pixel Buds A-Series does not.