The Anker Soundcore Space A40 Truly Wireless are lower mid-range noise cancelling in-ears with a few extra features. Notably, there's an adaptive active noise cancelling (ANC) system, which outperforms similar products from this manufacturer, like the Anker SoundCore Life P3 Truly Wireless. They also support the LDAC codec, which is Sony's proprietary codec for hi-res audio, and have robust sound customization features via their companion app. You can even wirelessly recharge their carrying case, making them a solid choice if you want affordable yet versatile in-ears.
Our Verdict
The Anker Space A40 are good for sports and fitness. They're comfortable enough for long workouts and sturdy enough to withstand wear and tear. If you like to exercise outdoors, there's even an IPX4 rating for water resistance to help protect them against the elements. They'll stay in your ears for more moderate workouts, but since they lack stability fins, their fit isn't as secure as that of some other models.
- Comfortable and well-built design.
- Rated IPX4 for water resistance.
- Sound customization features available via companion app.
- They lack stability fins and can pop out of your ear.
The Anker Space A40 are very good for commuting and travel. Thanks to their adaptive ANC system, these headphones can block out background noises like bus and plane engines. They boast a comfortable fit and a portable design that's easy to take with you on the go. Additionally, they last over eight hours continuously, and their carrying case provides an extra four charges if needed.
- Amazing full range noise isolation performance.
- Comfortable and well-built design.
- Sound customization features available via companion app.
- They lack stability fins and can pop out of your ear.
The Anker Space A40 are decent for office use. With a continuous battery life of over eight hours, they last through most workdays, and their carrying case offers some extra charges if you need to top them up. You can pair these headphones to up to two devices at a time, making it easy to switch between your phone and your laptop. Additionally, their adaptive ANC system helps you focus on your work by reducing ambient noise, such as the chatter of nearby coworkers. That said, the mic doesn't sound the greatest as the earbuds are quite far from your mouth.
- Amazing full range noise isolation performance.
- Comfortable and well-built design.
- Supports multi-device pairing.
- They lack stability fins and can pop out of your ear.
- Mic has poor recording quality.
The Anker Space A40 are Bluetooth-only headphones; you can't use them wired.
The Anker Space A40 are truly wireless headphones. While you can connect them to Bluetooth-enabled PCs, their latency is likely too high to be suitable for gaming, even when using their low-latency 'Game Mode'.
The Anker Soundcore Space A40 Truly Wireless have decent audio reproduction accuracy. Their sound signature deviates somewhat from their warm sound profile, with some fluctuations leading to alternate dullness and airiness in the treble. The L/R drivers are well-matched, so instruments and vocals are accurately rendered in the stereo image. You won't perceive timbral changes due to harmonic distortion, even at high listening levels, either.
The Anker Soundcore Space A40 Truly Wireless have amazing noise isolation performance. Noise from chatty coworkers, honking horns, and rumbling airplanes is well attenuated. If you're in a really loud environment, consider switching to the adaptive ANC mode for a bit of extra bass-range reduction.
The Anker Soundcore Space A40 Truly Wireless have disappointing microphone performance. Your voice on calls sounds far away and sibilant. On the plus side, the mic system separates your voice from background noise; however, you may be drowned out in louder environments, such as train stations.
The Anker Soundcore Space A40 Truly Wireless have better frequency response consistency than their score indicates. If you take the time to seat the earbuds, your listening experience will resemble our frequency response measurements.
Performance Usages
Changelog
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Updated Mar 12, 2026:
This review has been updated to Test Bench 2.1, which removes the Group Delay test, and rebalances scoring for the Harmonic Distortion test and Audio Reproduction Accuracy performance usage. For more details, consult our full changelog.
- Updated Mar 12, 2026: This review has been updated to Test Bench 2.1, which removes the Group Delay test, and rebalances scoring for the Harmonic Distortion test and Audio Reproduction Accuracy performance usage. For more details, consult our full changelog.
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Updated Jan 13, 2026:
We retested the Noise Isolation - Full Range on firmware 4.19 to ensure that the previous results are still current, and made no changes to the review.
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Updated Nov 05, 2025:
This review has been updated to Test Bench 2.0, which adds the following tests: Stereo Mismatch, Group Delay, Cumulative Spectral Decay, PRTF, Harmonic Distortion, and Electrical Aspects. We've added new performance usages and updated the text throughout the Sound tests and side-by-sides.
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Differences Between Sizes And Variants
The Anker Soundcore Space A40 come in three color variants: 'Black', 'White', and 'Blue'. We tested the 'Black' variant, and you can see our model's label. If you encounter another variant of these headphones, please let us know in the forums, and we'll update our review.
Popular Headphones Comparisons
The Anker Space A40 are truly wireless headphones with a powerful adaptive ANC performance. They can block out an amazing amount of ambient noise that rivals high-end competitors like the Sennheiser MOMENTUM True Wireless 3, and you can also switch to one of five manual ANC modes if you prefer a different level of noise isolation. Like the Anker Soundcore Liberty 3 Pro Truly Wireless, they also support the LDAC codec for streaming hi-res audio on supported apps. Unfortunately, their mic's recording quality is similarly poor, so if you care about call quality, check out our picks for the best earbuds and Bluetooth headsets for phone calls.
Check out our recommendations for the best wireless Bluetooth earbuds and the best noise cancelling earbuds.
The Anker Soundcore Liberty 4 NC Truly Wireless and the Anker Soundcore Space A40 Truly Wireless are very similar earbuds. The Liberty 4 NC have a bassier sound than the A40, which EDM fans might appreciate. However, both can be adjusted with the companion app's graphic EQ and presets. Their ANC systems both work incredibly well, and they both have around the same continuous battery life. Ultimately, your preference between the two will come down to what kind of design you want. The Liberty 4 NC have a bud and stem design that is slightly more stable, but the A40's bud-only design takes up less visual real estate and has a more subtle look.
There are good reasons to pick either the Anker Soundcore Space A40 Truly Wireless or the CMF Buds Pro 2. The primary reasons to choose the Anker are for the longer-lasting, continuous battery life and slightly better noise isolation. Meanwhile, the CMF are a bit more refined in design with a more stable fit, dustproofing, and a better microphone. Of course, your tastes will weigh in even with the presence of an EQ, because you might prefer the Anker's flat tuning or the CMF's more bassy sound profile.
The JBL Tune Buds True Wireless are both bassier and more excited-sounding than the Anker Soundcore Space A40, which sound much more veiled in the treble and have a more controlled bass. Both buds can be customized with graphics EQs and presets. The JBL have a more stable fit and a longer continuous battery life. That said, the Anker have a much better ANC system that blocks out a wider range of frequencies than the JBL, so it depends on whether you want ANC or not.
The Anker Soundcore Space A40 Truly Wireless are better in-ears than the Anker Soundcore Liberty 4 True Wireless. While both buds are well-built and comfortable, the Space A40's ANC system does a significantly better job of blocking out background noise across the full range. They also have better battery performance. However, the Liberty 4 have a virtual soundstage feature to help immerse you in your audio, and their companion app offers more overall features.
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Test Results
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