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We've recently released our Test Bench 1.7 update for Headphones! Read the Noise isolation R&D Article to learn more.

Anker Soundcore Liberty 4 NC Truly Wireless Headphones Review

Tested using Methodology v1.7
Reviewed Sep 19, 2023 at 08:22 am
Latest change: Retest May 31, 2024 at 02:16 pm
Anker Soundcore Liberty 4 NC Truly Wireless Picture
Neutral Sound
Wireless Gaming
Wired Gaming
Phone Calls

The Anker Soundcore Liberty 4 NC Truly Wireless are the budget sibling of the Anker Soundcore Liberty 4 True Wireless. The manufacturer touts an improved active noise cancelation (ANC) system with several presets available as well as a manual and adaptive mode that adjusts in real-time to the amount of ambient noise around you. They support LDAC codec for higher-resolution audio streaming, and their companion app features a graphic EQ with 22 presets to give you control over the mix. They also have an IPX4 rating for protection against water splashes and spills.

Our Verdict

7.0 Neutral Sound

The Anker Liberty 4 NC are decent for neutral sound. They have a bass-heavy sound profile with lots of thump and punch to suit EDM and hip-hop. Fortunately, vocals and instruments in genres like folk and rock still sound detailed and intense. If you want a different mix, their companion app has a graphic EQ and presets to fine-tune their sound to your liking. They're lightweight and comfortable but have a bad passive soundstage, though this is expected for in-ear headphones.

  • Graphic EQ and presets for sound customization.
  • Small passive soundstage.
8.0 Commute/Travel

The Anker Soundcore Liberty 4 NC are great for commuting and travel. Their ANC system does a great job of isolating you from the deep rumble of bus and plane engines, as well as ambient noise from chatty passengers. Their nine-hour battery life will also last you long flights without needing a recharge, and their onboard controls are extremely customizable, allowing you to play/pause music, change the volume, and change the ANC setting without taking your phone out. If you need to take calls during your commute, though, their microphone doesn't capture a lot of detail in your voice, and passing cars or trains are likely to drown you out entirely.

  • Lightweight and comfortable.
  • Great ANC performance.
  • Low leakage at high volumes.
  • Buds can fall out over time depending on the shape of your ear.
  • Microphone makes your voice sound dark and muddy.
8.2 Sports/Fitness

The Anker Liberty 4 NC are great for sports and fitness. They're lightweight and comfortable for long training sessions, and their ANC can keep you isolated from background noise in a busy gym or along a road with heavy traffic. They also have a transparency mode with optional wind noise reduction, so you can stay aware of your surroundings. However, they don't fit very deep in-ear and have a habit of moving around depending on the shape of your ear. Still, they'll stay in place during a moderate run or weight session on a bench but aren't stable enough for CrossFit or sprinting. Fortunately, their nine-hour battery will last you a few workouts before needing a recharge.

  • Lightweight and comfortable.
  • Great ANC performance.
  • Low leakage at high volumes.
  • Buds can fall out over time depending on the shape of your ear.
7.4 Office

The Anker Soundcore Liberty 4 NC are decent for the office. These earbuds have a lightweight and comfortable build, as well as a nine-hour battery for all-day listening. There's also a quick charge feature that gives you four hours of playback time off a ten-minute charge in their case. Their great ANC performance will isolate you from ambient chatter and noisy PC fans, and they can connect to two devices simultaneously. That said, they're only okay for taking calls during the workday. Your voice is understandable but sounds quite bassy and lacking in detail.

  • Great ANC performance.
  • Low leakage at high volumes.
  • Microphone makes your voice sound dark and muddy.
5.7 Wireless Gaming

The Anker Liberty 4 NC aren't suitable for wireless gaming. Their Bluetooth-only connection means you can't use them on most consoles. They have a Gaming Mode you can enable in-app to lower their latency on PCs and mobile devices. However, audio lag is still quite high on PCs, so you'll notice lip sync issues. Some devices also compensate for latency differently.

5.5 Wired Gaming

The Anker Liberty 4 NC are wireless earbuds and can't be used for wired gaming.

6.7 Phone Calls

The Anker Liberty 4 NC are okay for phone calls. Your voice sounds dark and lacking in detail, but you're still understandable on the other end of the line. They also do a decent job of separating your voice out from moderate noise, but louder sources, like passing subway trains or loud trucks, are likely to drown out your voice entirely. Fortunately, they're comfortable enough for long calls, and their ANC does a great job of isolating you from background noise, so you'll hear your call very clearly.

  • Great ANC performance.
  • Microphone makes your voice sound dark and muddy.
  • 7.0 Neutral Sound
  • 8.0 Commute/Travel
  • 8.2 Sports/Fitness
  • 7.4 Office
  • 5.7 Wireless Gaming
  • 5.5 Wired Gaming
  • 6.7 Phone Calls
  1. Updated May 31, 2024: This review has been updated to correct the case's height and volume measurements and to add text to the corresponding section.
  2. Updated Apr 22, 2024: We've added a comparison between these buds and the OnePlus Buds 3 Truly Wireless in Comfort.
  3. Updated Apr 04, 2024: We've retested ANC Wind Handling with updated methodology.
  4. Updated Apr 04, 2024: The following test groups have been updated following Test Bench 1.7: Noise Isolation - Full Range, Noise Isolation - Common Scenarios, and ANC Wind Handling. There have also been text changes made throughout the review, including to the usages and product comparisons to match these results.
  5. Updated Apr 04, 2024: We've converted this review to Test Bench 1.7, which updates our Noise Isolation test. We've also expanded the scope of this test to include Common Scenarios in addition to Voice Handling and Wind Handling.
  6. Updated Jan 17, 2024: The following test group has been updated following TB 1.6: Bluetooth Connection. There have also been text changes made throughout the review, including to the usages to match these results.
  7. Updated Jan 17, 2024: We've converted this review to Test Bench 1.6 , which updates how we measure latency. We've updated and renamed the following test groups: Wired Connection, Bluetooth Connection, and Wireless Connection (Dongle). We've also added new codec latency measurements and provided an audio sample of recorded latency.
  8. Updated Sep 20, 2023: We've corrected a minor inaccuracy in the controls box.
  9. Updated Sep 19, 2023: Review published.
  10. Updated Sep 01, 2023: Early access published.
  11. Updated Aug 25, 2023: Our testers have started testing this product.
  12. Updated Jul 20, 2023: The product has arrived in our lab, and our testers will start evaluating it soon.
  13. Updated Jul 11, 2023: We've purchased the product and are waiting for it to arrive in our lab.

Differences Between Sizes And Variants

The Anker Liberty 4 NC are available in five color variants: 'Velvet Black', 'Light Blue', 'Navy Blue', 'Clear White', and 'Pastel Pink'. We tested the 'Navy Blue' variant and you can see our unit's label here. We expect our results to be valid for the other variants as well.

If you come across another variant, let us know in the forums, and we'll update our review.

Compared To Other Headphones

The Anker Liberty 4 NC are wireless noise cancelling earbuds. They're a cheaper sibling of the Anker Soundcore Liberty 4 True Wireless, and while their ANC does a great job at eliminating undesirable ambient noise, like rumbly bus engines and chatty coworkers, their lower cost means they don't come with as many extra features, like a heart rate monitor or head tracking support for Spatial Audio. While not as sports-oriented as the Anker Soundcore Liberty 3 Pro Truly Wireless, they're still stable enough for use during a light run or workout. That said, they'll still fall out during more intense exercise since they don't have any extra stability features and don't sit deep in the ear. They're also significantly more customizable than more premium in-ears, like the Apple AirPods (3rd generation) Truly Wireless, and come with multiple EQ and ANC options to choose from.

If you're looking for more options, check out our recommendations for the best wireless Bluetooth earbuds, the best noise cancelling earbuds, and the best Anker headphones.

EarFun Air Pro 3 True Wireless

The Anker Soundcore Liberty 4 NC Truly Wireless  are better earbuds than the EarFun Air Pro 3 True Wireless. The Anker last longer on a single charge, leak less volume at high volumes, and have more available features via their companion app, like 3D surround sound. Their ANC also blocks out more bass-range background noise, like rumbly bus engines, making them better suited for commuting and travel. However, the EarFun have a better integrated microphone. You sound clearer over a call, though still a little thin, and it does a slightly better job of separating your voice from background noise as well. 

OnePlus Buds 3 Truly Wireless

The Anker Soundcore Liberty 4 NC Truly Wireless and the OnePlus Buds 3 Truly Wireless are found in the same wallet-friendly price bracket. In some ways, they have a similar performance, like sharing a comfortable and well-built design, as well as having excited sound profiles that can be customized in their respective companion apps. That said, the Anker have a better overall noise isolation performance and longer continuous battery life, while the OnePlus' integrated mic can capture your voice more clearly, even in noisy environments.

Anker Soundcore Liberty 4 True Wireless

The Anker Soundcore Liberty 4 NC Truly Wireless are an upgraded version of the Anker Soundcore Liberty 4 True Wireless. The Liberty 4 NC have significantly better noise isolation performance and a longer battery, making them more ideal for use at the office and during a commute. The Liberty 4 NC also have a better-balanced default sound profile, which some users may prefer, though you can customize either earbuds' mix in their companion app to suit your tastes. The Liberty 4 NC don't have as good of a mic as the Liberty 4, but given their price difference, it's not enough of an advantage to recommend the Liberty 4 over the Liberty 4 NC unless you really care about call quality.

Sony WF-C700N Truly Wireless

The Anker Soundcore Liberty 4 NC Truly Wireless and Sony WF-C700N Truly Wireless are both budget friendly noise cancelling earbuds with the same IPX4 rating against water. The Anker have more effective ANC with adaptive modes. They sound more excited by default but have EQ in the app to adjust to taste. Their controls are touchpads. Their case is chunky, but shorter, and the buds have stems. The Sony are light with fewer charges in their case. Their companion app has a virtual soundstage which is more capable than the Anker's, but requires compatible streaming service support. The default sound is less bassy and more balanced, and you can use the EQ in the app. They use buttons for the controls instead of touchpads. Their ANC, unfortunately, is less impressive, but it isolates high-pitched noise well.

JBL Live Pro 2 TWS True Wireless

The Anker Soundcore Liberty 4 NC Truly Wireless and the JBL Live Pro 2 TWS True Wireless have similar feature sets, but the Anker have the edge over the JBL for most uses. While both buds have similar, bass-heavy sound profiles that are adjustable via their respective companion apps, as well as great noise isolation performances, the Anker have a slightly longer continuous battery life and their case holds more charges. They also have a game mode to help lower latency on mobile devices if you want to game or stream video with lower audio lag, and they support LDAC, which is a codec designed for streaming hi-res audio with supported platforms. 

JBL Tune Flex True Wireless

The Anker Soundcore Liberty 4 NC Truly Wireless are better than the JBL Tune Flex True Wireless. The Anker's ANC feature blocks out much more noise, and they support multi-device pairing. They have a virtual surround sound feature to help create a more immersive listening experience.

Anker Soundcore Space A40 Truly Wireless

The Anker Soundcore Liberty 4 NC Truly Wireless and the Anker Soundcore Space A40 Truly Wireless are very similar earbuds. The A40 have a warmer sound than the bass-heavy Liberty 4 NC, but both can be adjusted with the companion app's graphic EQ and presets. Their ANC systems both work incredibly well, with the A40 blocking out slightly more bassy ambient noise than the Liberty 4. They both last around as long on a single charge as well. Ultimately, your preference between either 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.

Anker Soundcore Liberty 3 Pro Truly Wireless

The Anker Soundcore Liberty 4 NC Truly Wireless are slightly better earbuds than the Anker Soundcore Liberty 3 Pro Truly Wireless. The Liberty 4 NC last longer on a single charge and have more extra charges in their carrying case compared to the Liberty 3 Pro. While both earbuds have an in-app EQ that allows for sound customization, the Liberty 4 NC's default sound is more neutral, which some users may prefer. The Liberty 3 Pro also aren't compatible with the Anker Soundcore app's 3D Surround Sound feature, which creates a virtual soundstage for improved immersion. That said, the Liberty 3 Pro are  more stable and come with a selection of swappable silicone fins to help you find the best possible ft. They also have better overall noise isolation. 

Anker SoundCore Life P3 Truly Wireless

Anker Soundcore Liberty 4 NC Truly Wireless are slightly better earbuds than the The Anker SoundCore Life P3 Truly Wireless. The Liberty 4 NC have a more neutral default sound profile, which some users may prefer, and a longer battery life. They also support 3D Surround Sound, a virtual soundstage feature available in the Anker Soundcore app. Conversely, the Life P3 have slightly better noise isolation, particularly when it comes to bass range noise like the low rumble of bus and plane engines. That said, both earbuds have the same level of customizability via the app, including a graphic EQ and presets, as well as onboard control configuration. If you're looking for a cheaper option, the Life P3 isn't a bad deal. However, the Liberty 4 NC offers more for only a slightly higher price tag. 

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Test Results

perceptual testing image
Type In-ear
Enclosure Closed-Back
Wireless Truly Wireless
Transducer Dynamic

The Anker Liberty 4 NC look similar to the Anker Soundcore Liberty 4 True Wireless. Their bud-and-stem design has a semi-gloss finish and a round design. They're available in five colors: 'Velvet Black', 'Light Blue', 'Navy Blue', 'Clear White', and 'Pastel Pink'.

Weight 0.02 lbs
Clamping Force
0 lbs

The Anker Liberty 4 NC have a comfortable fit. Similar to other truly wireless buds like the OnePlus Buds 3 Truly Wireless, they have a lightweight design. The buds don't sit deep in your ear canal, and they come with four different sizes of ear tips to help you find the best fit for your ears. However, the part of each earbud that's meant to sit in your inner ear is a bit small and doesn't fit snugly in larger or different-shaped ears, requiring more frequent readjustments.

OS Compatibility
Not OS specific
Ease Of Use Good
Feedback Good
Call/Music Control Yes
Volume Control Yes
Microphone Control No
Channel Mixing
Noise Cancelling Control On/Off
Additional Controls Voice Assistant

These earbuds have a good control scheme. A touch-sensitive surface at the top of the stem is used to input commands, and the buds play a chime to indicate that they've registered an input, though not when you've hit the max/min volume setting. They work with a light touch and are smart enough not to register accidental commands when readjusting the buds. You can also use their companion app to enable and swap out extra controls, like volume control, talk-through, and your device's voice assistant.

On either earbud:

  • Single tap: Plays and pauses audio.
  • Press and hold: Switches between ANC and transparency mode.

On the left earbud:

  • Double tap: Skips to the next track.

On the right earbud:

  • Double tap: Skips to the previous track.

L 1.7" (4.2 cm)
W 1.1" (2.9 cm)
H 0.8" (2.1 cm)
Volume 1.56 in³ (25.58 cm³)
Transmitter Required No

The Anker Liberty 4 NC are extremely portable. Like most in-ears, you can fit them in your pocket or bag without issue.

Type Hard case
L 2.3" (5.7 cm)
W 2.3" (5.7 cm)
H 1.2" (3.0 cm)
Volume 5.95 in³ (97.47 cm³)

The Anker Liberty 4 NC case is great. Instead of sliding open, like the Anker Soundcore Liberty 3 Pro Truly Wireless, this case has a sturdy hinge that flips up to open. When closed, the lid sits flush with the squarish case, and it opens like a partial clamshell, meaning there are fewer hard angles to crack the lid if dropped. So, while the entire case and hinge are plastic, it can handle a drop or two. There are three LEDs, one outside the case on their pairing button to indicate connection status and one near each earbud to indicate charging level, which is also handy if you're fumbling to replace the buds in the dark.

Build Quality

Build quality is good. The Anker Liberty 4 NC's plastic build feels cheap, and the glossy parts of their build are prone to fingerprint accumulation. They're rated IPX4 for protection against water splashes, so they'll hold up during a run outside.


For most people, these buds are stable in-ear. They have no problem staying on with moderate head movement, like during a jog or yoga session, but they're more likely to come out during more intense workouts. Their smaller size also means you'll need to readjust them more often if you have larger ears.

Headshots 1
Headshots 2
In The Box

  • Anker Soundcore Liberty 4 NC earbuds
  • 4x tip sizes
  • Charging case
  • USB-A to USB-C charging cable
  • Manuals

Sound Profile
Bass Amount
1.93 dB
Treble Amount
-0.68 dB

The Anker Liberty 4 NC have a bass-heavy sound profile. There's extra thump and punch to suit genres like EDM and hip-hop, while an overemphasized treble range makes sibilants, like cymbals, bright, if not piercing. Instruments and vocals are detailed and intense but slightly muddied by all the extra bass.

If you'd like a different sound, you're in luck since their companion app has a whopping 22 available EQ presets. We measured how five of the most commonly used presets perform compared to one another, and you can see that data here. There's also a graphic EQ interface to let you fine-tune the mix, as well as HearID, a feature that creates a custom EQ based on an in-app hearing test.

Frequency Response Consistency
Avg. Std. Deviation
0.31 dB

Their frequency response consistency is very good. Once you get a good fit using the provided ear tips, you'll get consistent audio delivery most of the time you use them.

Note: Several in-ears with silicone tips don't fit properly in the right ear of our test rig, creating a discrepancy in how consistent the bass delivery appears in our graphs. In real-life listening, bass consistency is much more accurate so long as the earbuds can achieve a proper fit and seal.

Raw Frequency Response
Bass Accuracy
Std. Err.
4.08 dB
Low-Frequency Extension
10 Hz
2.89 dB
5.57 dB
4.15 dB

The bass response is quite even across the range, resulting in a balanced listening experience. It's also consistently overemphasized the whole way across, resulting in ample thump and punch to complement genres like EDM and hip-hop. The rest of the mix also sounds slightly muddy as a result.

Mid Accuracy
Std. Err.
1.61 dB
2.25 dB
-0.02 dB
0.4 dB

The Anker Liberty 4 NC have excellent mid accuracy. The range is well balanced, so instruments and vocals sound present and detailed.

Treble Accuracy
Std. Err.
3.56 dB
-0.23 dB
4.67 dB
-2.48 dB

The Anker Liberty 4 NC have good treble accuracy. The low-treble is very well-balanced, resulting in detailed vocals and instruments. However, an overemphasized mid-treble range makes sibilants, like the splashy cymbals throughout Tom Sawyer by Rush, sound piercing.

1.79 dB
0.69 dB

Their peaks and dips performance is good. A wide peak covers most of the bass range, while a wide dip covers most of the mid-range, extending into the low-treble. These only deviate from the target curve by a few decibels each way, so the only noticeable impact is that audio sounds quite bass-heavy. That said, the left and right drivers suffer from a slight imbalance. As a result, the left driver has a bassier sound than the right. A sharp peak in the mid-treble range also means that sibilants sound very sharp and piercing.

Weighted Group Delay
Weighted Phase Mismatch
Weighted Amplitude Mismatch
Weighted Frequency Mismatch

These buds have great imaging performance. While Anker isn't typically the most reliable regarding quality control and ergonomics, our unit doesn't suffer from significant imaging issues that would make or break their usefulness as daily-use earbuds. The group delay falls within acceptable limits, ensuring tight bass and transparent treble reproduction. Our L/R drivers are well balanced in frequency, but there's a small noticeable mismatch in the amplitude and phase response in the bass range. Lower frequencies are more emphasized in the left driver than the right, making the one side sound more hollow and resulting in a slightly unbalanced listening experience, especially on bass-heavy tracks. Keep in mind, though, that imaging varies from unit to unit.

Passive Soundstage
PRTF Accuracy (Std. Dev.)
PRTF Size (Avg.)
PRTF Distance
Acoustic Space Excitation

These headphones have a bad passive soundstage, though it's expected for earbuds. They bypass the outer ear by design and can't create a spacious and immersive listening experience. Audio sounds like it's coming from inside your head rather than all around the room.

Virtual Soundstage
Head Modeling
Speaker Modeling
Room Ambience
Head Tracking
Virtual Surround
3D Surround Sound

You can enable these earbuds' 3D Surround Sound mode in their companion app, which creates a virtual soundstage to improve immersion when listening to audio.

Weighted Harmonic Distortion
WHD @ 90
WHD @ 100

These earbuds have excellent weighted harmonic distortion performance. All frequencies fall within good limits, producing clear and pure audio reproduction even at high volumes.

Test Settings
Bluetooth 5.0
LDAC, 32-bit, 48kHz
Soundcore Signature
Adaptive ANC
Silicone (small)

These are the settings used to test these earbuds. Our results are only valid when using them in this configuration.

Noise Isolation - Full Range
Noise Cancelling Yes
Overall Attenuation
-20.94 dB
-16.38 dB
-23.13 dB
-24.06 dB

The Anker Liberty 4 NC's ANC system performs great, considering their price. They can isolate you from the low rumble of bus and plane engines and ambient chit-chat and high-pitched whirrs from PC fans. The companion app also lets you switch between different ANC modes, including an adaptive ANC mode that auto-adjusts based on ambient sound levels.

There's also a transparency mode available in the app. This lets in outside noise to give you more situational awareness during a run or even carry a conversation without taking the buds out. When switched to this mode, these buds let in a decent amount of ambient noise, but the resulting transparency audio is slightly muffled and veiled. In comparison, earbuds like the Apple AirPods Pro (2nd generation) Truly Wireless deliver a much clearer transparency mode that lets you hear more detail in the noise around you.

Noise Isolation - Common Scenarios
Airplane Noise Attenuation
-19.31 dB
Airplane Noise Isolation Audio
Office Noise Attenuation
-19.15 dB
Office Noise Isolation Audio
Street Noise Attenuation
-20.72 dB
Street Noise Isolation Audio

These earbuds also offer great performance when it comes to blocking our more dynamic sounds from common environments. Whether you're walking down the street, sitting on a plane, or at the office, the ANC can tackle these sounds well. If you want an even better noise isolation performance, you'll want to consider over-ears like the Anker Soundcore Space Q45 Wireless instead.

Noise Isolation - Voice Handling
Female Voice 1
Male Voice 1
Female Voice 2
Male Voice 2
ANC Wind Handling
ANC Wind Noise

These buds have a Wind Noise Reduction feature, although the manufacturer doesn't really specify how it works. You can see a comparison of the performance of this mode and off here. Our results reflect this feature on. It's worth noting that the amount of wind noise can vary depending on the angle due to the bud's shape and size. It also seems that the angle impacts the effectiveness of the Wind Noise Reduction feature as there's less wind noise present at 90 degrees when the feature is off compared to other angles.

Keep in mind that wind noise directly interacts with the ANC microphones. It's this action that's interpreted as noise by the ANC system, even though the sound doesn't reach your ears, which produces unwanted sound. Using this reduction feature may impact ANC performance if you're in a windy environment.

Leakage Audio
Overall Leakage @ 1ft
32.58 dB

These earbuds have great leakage performance. Escaping audio is mostly concentrated in the treble range and sounds quite thin. If you're blasting tunes at high volumes in louder environments, like an office, people around you aren't going to hear it.

Microphone Style
Detachable Boom
Mic Yes
Recording Quality
Recorded Speech
108.34 Hz
FR Std. Dev.
4 dB
3,466.89 Hz
Weighted THD
25.32 dB

Their integrated microphone has sub-par recording performance. Your voice sounds dark and bassy but lacking in crisp detail from a recessed high-end.

Noise Handling
10.55 dB
Noise Gate
Always On
Speech + Pink Noise Handling
Speech + Pink Noise Audio Sample
Speech + Subway Noise Handling
Speech + Subway Noise Audio Sample

Noise handling performance is okay. The mic muffles your voice somewhat when trying to separate it from more moderate background noise. Louder environments, like a busy subway station, will drastically affect the amount of detail in your voice, if not drown it out altogether when large vehicles pass by.

Active Features
Active Features
Battery Type
Continuous Battery Life
9 hrs
Additional Charges
Total Battery Life
45 hrs
Charge Time
1.3 hrs
Power-Saving Feature
Auto-Off Timer and Standby Mode
Audio While Charging
Passive Playback
Charging Port USB-C

The Anker Liberty 4 NC have very good battery performance. They last nine hours on a single charge, easily getting you through a long workday. If you need more power for the commute home, their case holds an additional four full charges and has a fast-charging feature that gives you four hours of playback time on a ten-minute charge. In comparison, the Anker Soundcore Liberty 4 True Wireless lasts six hours and only has two extra charges in their case. A customizable auto-off timer lets you save power when the buds aren't in use.

Active Features
App Support
App Name Anker Soundcore
iOS Yes
Android Yes
macOS No
Windows No
Graphic + Presets
ANC Control
Mic Control No
Room Effects
Playback Control
Button Mapping Yes
Surround Support

The Anker Soundcore companion app has an incredible amount of extra features. You can customize the control scheme, manually adjust the ANC level, or select from several noise cancelling settings, including a transparency mode with optional wind noise reduction. They also have graphic EQ to let you change the mix to your preferences. You can switch between SBC and LDAC codecs, allowing you to play higher-quality audio files and toggle their 3D Surround Sound virtual soundstage. There's also a Safe Volume feature available that limits audio output to within safe levels. However, it's not the most accurate at high volumes, so if you're trying to preserve your hearing health, you're still better off keeping the volume low manually rather than relying on this feature.

You can see a video detailing how the app works here.

Wired Connection
Analog Audio
USB Audio
No Wired Option
Latency - Analog
Latency - USB
Recorded Latency
Recorded Latency Connection No Wired Audio

These earbuds come with a USB-A to USB-C cable for charging the case.

Bluetooth Connection
Bluetooth Version
Multi-Device Pairing
2 Devices
Quick Pair (Android)
Quick Pair (iOS)
Line Of Sight Range
276.57 ft (84.30 m)
Latency - SBC
348 ms
Latency - aptX
Latency - aptX Adaptive (High Quality)
Latency - aptX Adaptive (Low Latency)
Latency - LDAC
257 ms
Recorded Latency
Recorded Latency Codec LDAC
AAC Support

The Anker Liberty 4 NC have very good Bluetooth performance. They support multi-device pairing, allowing you to stay connected to two devices simultaneously. They also have a Gaming Mode you can activate to help lower their latency. Having it on or off didn't affect PC latency, resulting in high lip sync mismatch. However, it's worth mentioning that some apps and devices compensate for latency differently, and it seems like this feature is intended for use with smartphones.

In addition to the default SBC codec, these buds support LDAC, which is Sony's hi-res audio codec for streaming audio in higher quality. It's to be expected that this codec has high latency, but it's not an issue if you're only streaming audio. You can only stay connected to one device while using this codec, limiting its convenience.

Wireless Connection (Dongle)
Line Of Sight Range
Latency - Dongle
Recorded Latency
PC Compatibility
Wired USB
Non-BT Wireless

These earbuds only support audio and mic compatibility with PCs via Bluetooth connection.

PlayStation Compatibility
PS4 Analog
PS4 Wired USB
PS4 Non-BT Wireless
PS5 Analog
PS5 Wired USB
PS5 Non-BT Wireless
Xbox Compatibility
Xbox One Analog
Xbox One Wired USB
Xbox One Non-BT Wireless
Xbox Series X|S Analog
Xbox Series X|S Wired USB
Xbox Series X|S Non-BT Wireless
Charging Case
USB Input
Line In
Line Out
Optical Input
RCA Input
Dock Charging
Power Supply

Their carrying case holds four additional charges and can be topped up via USB-C. It also supports wireless charging.