arkivoAPI

TV and audio / Earbuds

soundcore Liberty 4 Pro
Form factor
In-ear
ANC
Yes
Battery life
10h
With case
40h

86 of 166 fields known.

At a glance

All specs

SourceCalculated

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
Announced
Not available
Predecessor
Not available
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.

Design

Form factor
In-ear3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026
Bud shape
Stem3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026Stemmed earbuds with a control area on the stem.
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

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
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
Custom EQ bands
87Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026Eight-band custom equalizer in the soundcore app. The app also has 22 presets.
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.
Head tracking
Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Spatial Audio Music Mode offers head tracking or fixed. Podcast, Movie and Game modes are listed without head tracking.

Noise cancelling

ANC type
Not available
Adaptive ANC
Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Ambient Sound section: ANC levels 6 to 10 adapt to the ears and environment.
ANC levels
51Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026ANC is level 6 to 10, so 5 levels. Transparency is level 1 to 5. Normal sits between them.
ANC attenuation (claimed)
Not available
Automatic ANC and transparency blend
Not available
Wind noise reduction
Yes3Maker product pageus.soundcore.com/products/a3954-liberty-4-pro-tws-earbudsRead 20 October 2026Six microphones, a noise cancelling algorithm and wind noise reduction technology for calls.

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)
ANCHours (h)
Yes5.7
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
Call audio bandwidth
Not available
Mic mute control
Not available
Sidetone
Not available

Connectivity

Chip
Not available
Bluetooth profiles
Not available
LE Audio
Not available
Auracast
Not available
Multipoint
Yes1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
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
Audio sharing
Not available
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
FeatureNeeds
LDACAndroid 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 PairAndroid 6.0 or later.
Head trackingSpatial Audio Music mode set to head tracking in the soundcore app. Fixed mode has no head tracking.
Easy ChatEnable in the soundcore app. Available only in ANC mode.
Touch bar menuThe 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
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
Quick charge time
5min1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026
Earbud playback after quick charge
4h1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026Charging section says a 5-minute charge of the earbuds gives 4 hours of playtime. ANC, volume and codec are not stated.

Charging case

Case battery
580mAh1Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000021411/en_US/000021411.pdfRead 20 October 2026SPECS table lists Charging Case 580mAh. Typical or rated is not stated.
User-replaceable case battery
Not available
Wireless standards
Not available
Wireless charging power
Not available
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.
Voice assistant
Not available

Sensors and health

Heart rate sensor
Not available
Skin temperature sensing
Not available
Hearing aid feature
Not available
Medical clearances
Not available
Hearing test
Yes7Measurementsoundguys.com/anker-soundcore-liberty-4-pro-review-125410Read 20 October 2026HearID Sound Test creates an EQ preset for hearing differences. It is consumer sound personalization, not a medical test.
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
Dust and water rating, case
Not available
Water resistance depth
Not available

Software

Finding network
Not available
Precision finding
Not available
Live translation
Not available

Dimensions and weight

Bud dimensions
Not available
Case weight
51g(1.8 oz)8Retailer pageamazon.com/dp/B0DBHPZLCCRead 20 October 2026Amazon US detail table lists carrying case weight 51 g. SoundGuys also lists case 51 g in its review spec box and 52 g with case on its product page.
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

Communication certifications
Not available
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

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.

More earbuds comparisons

Variants

Each variant lists only what differs from the specs above.

Model numberGTINMarketsColours
A3954ZF1194644297237USGlossy Black
A3954Z21194644297206USPearl White
A3954ZG1194644207434USBlue

Sources

We read 12 sources for this earbuds. The numbers match the markers in the sheet.

  1. Read 20 October 2026Backs 42 fields
  2. Read 20 October 2026Backs 1 field
  3. Read 20 October 2026Backs 9 fields
  4. Read 20 October 2026Backs 6 fields
  5. Read 20 October 2026Backs 4 fields
  6. Read 20 October 2026Backs 1 field
  7. Read 20 October 2026Backs 11 fields
  8. Read 20 October 2026Backs 4 fields
  9. Read 20 October 2026Backs 3 fields
  10. Read 20 October 2026Backs 3 fields
  11. Read 23 October 2026Backs 1 field
  12. Read 23 October 2026Backs 1 field

See a wrong value? Tell us and name the field.