TV and audio / Earbuds

soundcoreMusic earbuds
Liberty 4 Pro
Released October 2024.7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Spec box says product release date October 2024. Anker Japan began sales on 2024-10-03 and the Ukrainian outlet Mezha reported the earbuds on Anker's site on 2024-10-07. Last checked 23 October 2026.
- Form factor
- In-ear
- ANC
- Yes
- Battery life
- 10h
- With case
- 40h
86 of 166 fields known.
At a glance
General
- Series
- Not available
- Model numbers
- A3954, A3954ZF1, A3954Z21, A3954ZG14Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.jsRead 20 October 2026
- GTIN / EAN
- 194644297237, 194644297206, 1946442074344Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.jsRead 20 October 2026US store barcodes per colour. The EU store uses the same barcodes for its own SKU names.
- Announced
- Not available
- Predecessor
- Not available
- Successor
- soundcore Liberty 5 Pro11Press articlephileweb.com/sp/news/d-av/202605/27/65209.htmlRead 23 October 2026PhileWeb's launch report names the Liberty 4 Pro as the previous model of the Liberty 5 Pro series.12Press articleexpertreviews.co.uk/technology/headphones-audio/soundcore-liberty-5-pro-reviewRead 23 October 2026Expert Reviews names the Liberty 4 Pro as a predecessor of the Liberty 5 Pro.
- Launch price (US)
- $129.997Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Spec box price $129.99. Digital Trends and Mezha also report $130 and $129 at launch. The maker's US store now lists $149.99.
- Launch price (EU)
- Not available
- Markets
- US, GB, EU, JP4Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.jsRead 20 October 2026Also sold through the UK, EU and Japan stores of the maker.
- Colours
- Glossy Black, Pearl White, Blue4Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.jsRead 20 October 2026US store lists Glossy Black, Pearl White and BIue, with a typo in the last name. Stored as Blue. Anker Japan sells Midnight Black, Pearl White, Sky Blue and Deep Green under other SKUs, and the EU store lists more colours.
Design
- Form factor
- In-ear3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026
- Use one bud alone
- Either bud1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- RGB lighting
- Not available
Drivers and sound
- Drivers per bud
Type Role Diameter (mm) Count per earbud Dynamic Woofer 10.5 1 Dynamic Tweeter 4.6 1 - Driver type
- Dynamic1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Driver size
- 10.5mm
- Drivers per bud
- 2
- Diaphragm material
- Titanium-coated (tweeter)3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026US page names a titanium-coated tweeter next to the 10.5mm driver. Only the tweeter coating is stated.
- Frequency response
- Min14 HzMax40 kHz1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table prints 14Hz - 40kHz with no codec or conditions.
- Impedance
- Not available
- Sensitivity
- Not available
- Sensitivity reference
- Not available
- Max sample rate
- Not available
- Max bit depth
- Not available
- Adaptive EQ
- Not available
- Personalised sound
- Yes7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026
- Onboard EQ
- Not available
- EQ presets
- Not available
- Volume limit
- Not available
Spatial audio
- Spatial audio
- Spatial Audio (Music, Podcast, Movie and Game modes)1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Four Spatial Audio modes: Music, Podcast, Movie and Game. Spatial Audio is not supported when LDAC is on.
Noise cancelling
- Active noise cancelling
- Yes3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026Seven sensors and real-time adaptive noise reduction that adapts every 0.3 seconds.
- ANC type
- Not available
- ANC microphones in both earbuds
- 69Press articlemezha.ua/en/2024/10/07/anker-soundcore-liberty-4-pro-is-presented-tws-headphones-with-anc-and-up-to-40-hours-of-battery-life-for-129/ampRead 20 October 2026Mezha describes seven sensors as six microphones and a barometer. Calls also use the six microphones.10Press articlemacerkopf.de/2025/01/07/anker-soundcore-liberty4-pro-ces2025Read 20 October 2026Six noise cancelling sensors plus a barometric pressure sensor for an airplane mode.
- ANC attenuation (claimed)
- Not available
- Transparency mode
- Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Adjustable transparency
- Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Transparency is level 1 to 5 on the slider and in the app.
- Automatic ANC and transparency blend
- Not available
Measured
- Frequency response notes (measured)
- SoundGuys found the default sound follows its headphone preference curve closely across the mids and highs, with more emphasis on bass below 200 Hz.7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Objective measurements section. SoundGuys compares the default sound with its headphone preference curve.
- Bass amount (measured)
- Not available
- Treble amount (measured)
- Not available
- Deviation from target (measured)
- Not available
- Consistency between fittings (measured)
- Not available
- Harmonic distortion (measured)
- Not available
- Sound leakage (measured)
- Not available
- Noise isolation (measured)
- Not available
- Noise isolation, best (measured)
- Not available
- Passive isolation (measured)
- Not available
- Call quality notes (measured)
- SoundGuys found voices clear in its ideal-conditions demo. In simulated office and street noise some background noise gets through while the voice stays in focus. Simulated wind and reverberant space were handled well. These are qualitative results.7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026SoundGuys microphone demos in ideal, office, street, windy and reverberant conditions. No numerical speech bandwidth or noise score is stored.
- Mic low-frequency extension (measured)
- Not available
- Mic high-frequency extension (measured)
- Not available
- Mic speech-to-noise ratio (measured)
- Not available
- Latency (measured)
- Not available
- Bluetooth latency, worst (measured)
- Not available
- 2.4 GHz latency, worst (measured)
- Not available
- Latency in game mode (measured)
- Not available
- Battery life (measured)
ANC Hours (h) Yes 5.7 - Longest tested use per charge
- 5.7h
- Battery life with case (measured)
- Not available
- Full charge time (measured)
- Not available
- Weight per bud (measured)
- Not available
Microphones and calls
- Voice microphones in both earbuds
- 63Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 20266-Mic AI Clear Calls.
- All microphones in both earbuds
- 65Maker product pageankerjapan.com/products/a3954Read 20 October 2026Six microphones are used for call noise removal and the seven sensors for ANC include a new barometric sensor, so six microphones in total.
- Bone conduction voice sensor
- Not available
- Mic noise reduction
- AI3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026
- Call audio bandwidth
- Not available
- Mic mute control
- Not available
- Sidetone
- Not available
Connectivity
- Chip
- Not available
- Connections
- Bluetooth1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Bluetooth codecs
- SBC, AAC, LDAC5Maker product pageankerjapan.com/products/a3954Read 20 October 2026Comparison table lists SBC / AAC / LDAC.
- Bluetooth profiles
- Not available
- LE Audio
- Not available
- Auracast
- Not available
- Multipoint devices
- 25Maker product pageankerjapan.com/products/a3954Read 20 October 2026Multipoint connects to two devices at the same time.
- Paired devices remembered
- Not available
- Automatic switching between own devices
- Not available
- Fast pairing
- Google Fast Pair1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Audio sharing
- Not available
- Wireless range (claimed)
- 10m1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Wireless receiver
- Not available
- Receiver connector
- Not available
- Simultaneous 2.4 GHz and Bluetooth audio
- Not available
Latency
We could not find any of these 3 fields. Show them
- Low latency mode
- Not available
- Claimed latency
- Not available
- Lowest claimed latency
- Not available
Compatibility
- Platforms
- Android, iOS, Windows, macOS7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Reviewer used the earbuds with an iPhone 15 Pro, notes LDAC needs a compatible Android phone and lists computer audio setup in the maker FAQ.
- Connection per platform
- Not available
- Features that need a specific device
Feature Needs LDAC Android 8.0 or later, enabled as Preferred audio quality in the soundcore app. Not available while connected to two devices. Spatial Audio is off while LDAC is on. LDAC raises power use and shortens playtime. Google Fast Pair Android 6.0 or later. Head tracking Spatial Audio Music mode set to head tracking in the soundcore app. Fixed mode has no head tracking. Easy Chat Enable in the soundcore app. Available only in ANC mode. Touch bar menu The case menu shows only Ambient Sound by default. Add Spatial Audio, Atmospheric, Find Device and Remote Camera in the soundcore app. - Official licence
- Not available
Battery and charging
- User-replaceable earbud battery
- Not available
- Claimed battery life
Mode Includes case recharges Hours (h) ANC off No 10 ANC off Yes 40 ANC on No 7.5 ANC on Yes 30 Transparency No 7.5 Transparency Yes 30 Call No 4.5 Source1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table: ANC off up to 10 h and 40 h with case, ANC on up to 7.5 h and 30 h. Anker FAQ test was at default settings, normal mode and 50 percent volume. LDAC increases power use and reduces playtime.2Maker product pageservice.soundcore.com/article-description/Different-Playtimes-of-soundcore-Liberty-4-Pro-from-a-Single-Charge-With-the-Charging-CaseRead 20 October 2026Maker FAQ: ANC 7.5 h and 30 h with case, normal 10 h and 40 h, transparency 7.5 h and 30 h. Calls 4 h with ANC, 4.5 h in normal mode and 4 h with transparency. The call row stores the normal-mode 4.5 h. Tested in the Anker laboratory at default settings, normal mode and 50 percent volume.- Longest claimed use per charge
- 10h
- Playback per charge with ANC (claimed)
- 7.5h
- Playback per charge without ANC (claimed)
- 10h
- Total with case (claimed)
- 40h
- Total with case and ANC (claimed)
- 30h
- Talk time (claimed)
- 4.5h
- Full charge time, buds
- 40min1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table says charging time for earbuds up to 40 minutes. SoundGuys lists 45 minutes.
- Charging guidance
- The manual gives up to 40 minutes for the earbuds. An empty case takes 2.5 hours by cable and 3.5 hours wirelessly. Case input is 5 V 1 A. The case stops charging the earbuds when its battery drops below 20 percent. Dry the earbuds and the USB-C port before charging.1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
Charging case
- User-replaceable case battery
- Not available
- Case charging port
- USB-C1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Wireless standards
- Not available
- Wireless charging power
- Not available
- Speaker in case
- Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Reset section says a notification sound plays from the charging case. SoundGuys says the app can play a tone from either the earbuds or the case.7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026The Find Device section of the app plays a loud tone from either the earbuds or the charging case.
- Case works as audio transmitter
- Not available
Controls
- Controls
- Pressure, Swipe1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Earbud volume control
- Swipe1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Gestures
- Squeeze once on either earbud: play or pause, or answer a call, Squeeze twice on the right earbud: next track, Squeeze twice on the left earbud: previous track, Tap and hold either earbud for 2 seconds: switch between ANC and transparency, or reject or end a call, Slide up on either earbud: volume up, Slide down on either earbud: volume down, Pinch both earbud stems for 3 seconds: pair a second device1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Controls table for dual earbuds. Squeeze controls can be customised in the app. Using a single earbud, squeeze twice plays the next track and there is no previous-track gesture.
- Remappable controls
- Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Voice assistant
- Not available
Sensors and health
- In-ear detection
- Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Sensors
- Barometric pressure sensor5Maker product pageankerjapan.com/products/a3954Read 20 October 2026Seven sensors for ANC, with a new barometric pressure sensor that works when Airplane Mode is turned on in the soundcore app.9Press articlemezha.ua/en/2024/10/07/anker-soundcore-liberty-4-pro-is-presented-tws-headphones-with-anc-and-up-to-40-hours-of-battery-life-for-129/ampRead 20 October 2026Seven sensors including one barometer.10Press articlemacerkopf.de/2025/01/07/anker-soundcore-liberty4-pro-ces2025Read 20 October 2026Barometric pressure sensor for the airplane mode. The same article gives a 149.99 euro price at its January 2025 launch while other reports say 129.99, so no euro price is stored.
- Heart rate sensor
- Not available
- Skin temperature sensing
- Not available
- Hearing aid feature
- Not available
- Medical clearances
- Not available
- Hearing protection
- Not available
- Health features
- Not available
Fit and durability
- Ear tips included
- XXS, XS, S, M, L, XL1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Ear tip materials
- Not available
- Stabilisers
- Not available
- Ear tip fit test
- Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Dust and water rating, buds
- IP551Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table lists IP55 for the earbuds. SoundGuys and press list IPX5. Anker Japan says the case is not rated.
- Dust and water rating, case
- Not available
- Water resistance depth
- Not available
Software
- Companion app
- soundcore1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- App platforms
- Android, iOS1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- User firmware updates
- Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
- Finding network
- Not available
- Precision finding
- Not available
- Live translation
- Not available
Dimensions and weight
- Bud dimensions
- Not available
- Case dimensions
- Width62Height29.6Depth65mm(2.4 × 1.2 × 2.6 in)8Retailer pageamazon.com/dp/B0DBHPZLCCRead 20 October 2026Amazon US detail table labels carrying case length 6.5 cm, width 6.2 cm and height 29.6 mm. Length is stored as depth. SoundGuys lists 65 x 62 x 30 mm with no axis names.
Certifications
- Hi-Res Audio
- Hi-Res Audio Wireless9Press articlemezha.ua/en/2024/10/07/anker-soundcore-liberty-4-pro-is-presented-tws-headphones-with-anc-and-up-to-40-hours-of-battery-life-for-129/ampRead 20 October 2026Mezha says the earbuds are Hi-Res Audio Wireless certified.10Press articlemacerkopf.de/2025/01/07/anker-soundcore-liberty4-pro-ces2025Read 20 October 2026Names the Hi-Res Audio Wireless standard.
- Communication certifications
- Not available
- FCC IDs
- 2AOKB-A3954, 2AOKB-A3954L, 2AOKB-A3954R6Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3954QSG.pdfRead 20 October 2026Quick Start Guide prints FCC ID 2AOKB-A3954 for the model A3954 and 2AOKB-A3954L and 2AOKB-A3954R for the left and right earbuds.
- Other certifications
- Not available
In the box
- In the box
- Earbuds, Charging case, Ear tips in six sizes (XXS, XS, S, M, L, XL), size M pre-installed, USB-C charging cable8Retailer pageamazon.com/dp/B0DBHPZLCCRead 20 October 2026Amazon US built-in media list: cable, charging case, XXS/XS/S/M/L/XL ear tips with size M pre-installed, and the earbuds.
- Cables included
- Not available
Links
- Product page
- us.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026
- Spec sheet
- Not available
- Manual
- salesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdf1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026English user guide A3954, published in the service index on 2025-09-01.
- EPREL registration number
- Not available
Warranty
- Manufacturer warranty (source market)
- 1.5years8Retailer pageamazon.com/dp/B0DBHPZLCCRead 20 October 2026Amazon US listing says 18 months warranty.
Compare with
Pick a earbuds to see both side by side. Differences are marked yellow.
Variants
Each variant lists only what differs from the specs above.
| Model number | GTIN | Markets | Colours |
|---|---|---|---|
| A3954ZF1 | 194644297237 | US | Glossy Black |
| A3954Z21 | 194644297206 | US | Pearl White |
| A3954ZG1 | 194644207434 | US | Blue |
Sources
We read 12 sources for this earbuds. The numbers match the markers in the sheet.
- Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds
- Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbuds.js
- Maker product pageankerjapan.com/products/a3954
- Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3954QSG.pdf
- Retailer pageamazon.com/dp/B0DBHPZLCC
- Press articlephileweb.com/sp/news/d-av/202605/27/65209.html
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Successorsoundcore Liberty 5 Pro





