Bose - QuietComfort Ultra Earbuds 2 vs Anker - Liberty 4 Pro
Between the QuietComfort Ultra Earbuds 2 and Liberty 4 Pro, the QuietComfort Ultra Earbuds 2 comes out ahead in spatial audio, while the Liberty 4 Pro wins on battery — buds / battery — with case. Overall, the QuietComfort Ultra Earbuds 2 scores 58.4 and the Liberty 4 Pro scores 72.8 on our Mars Score.
Which should you buy?
The Liberty 4 Pro is the clear pick on raw spec strength, leading by 14.4 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 QuietComfort Ultra Earbuds 2 if audio quality and feature breadth (ANC, codecs, multipoint) are the lead criteria for your purchase. The biggest gaps in its favor are spatial audio.
Pick the Liberty 4 Pro 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, water resistance, multipoint, so those specs do not separate the two — focus on the differences below.
Bottom line: the Liberty 4 Pro is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Bose - QuietComfort Ultra Earbuds 2 wins
- ▲Has Spatial audio.
Why Anker - Liberty 4 Pro wins
- ▲Battery — buds — 66.67% more. 10 h vs 6 h.
- ▲Battery — with case — 66.67% more. 40 h vs 24 h.
- ▲Driver size — 12.90% more. 10.5 mm vs 9.3 mm.
- ▲Weight per bud — 0.60 g less. 5.6 vs 6.2.
Spec comparison
Design
| Spec | Bose - QuietComfort Ultra Earbuds 2 | Anker - Liberty 4 Pro |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 6.2 g | 5.6 glead |
| Water resistanceⓘ | IPX4 | IPX4 |
Audio
| Spec | Bose - QuietComfort Ultra Earbuds 2 | Anker - Liberty 4 Pro |
|---|---|---|
| Driver sizeⓘ | 9.3 mm | 10.5 mmlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | truelead | false |
Battery
| Spec | Bose - QuietComfort Ultra Earbuds 2 | Anker - Liberty 4 Pro |
|---|---|---|
| Battery — buds | 6 h | 10 hlead |
| Battery — with case | 24 h | 40 hlead |
| Wireless case chargingⓘ | true | true |
Connectivity
| Spec | Bose - QuietComfort Ultra Earbuds 2 | Anker - Liberty 4 Pro |
|---|---|---|
| Bluetoothⓘ | 5.4 | 5.4 |
| Codecs | aptX Adaptive,AAC,SBC | LDAC,AAC,SBC |
| Multipointⓘ | true | true |
| In-ear detection | true | true |
Frequently asked
Which has longer battery, QuietComfort Ultra Earbuds 2 or Liberty 4 Pro?+
Liberty 4 Pro lasts 10h per charge vs 6h.
Do QuietComfort Ultra Earbuds 2 or Liberty 4 Pro support multipoint?+
Both support multipoint pairing.
Which has ANC, QuietComfort Ultra Earbuds 2 or Liberty 4 Pro?+
Both models have active noise cancellation.
Spec-level deep dives
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