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soundcore Liberty 4 NC vs soundcore P20i

A

Product A: soundcore

Liberty 4 NC

81 of 166 known

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B

Product B: soundcore

P20i

67 of 166 known

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Every value links to where we found it.

Only differences

Asoundcore Liberty 4 NC

Bsoundcore P20i

General

3 of 8 differ

Series

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Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

A3947, A3947Z111Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Current maker US product URL identifies sales SKU A3947Z11 for Velvet Black. A3947 is the original QSG hardware model. These identifiers are distinguished rather than presenting the sales SKU as a separate regulatory hardware model.4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012512/en_US/000012512.pdfRead 8 October 2026Original official Quick Start Guide explicitly prints Model A3947 and document 51005003876 V2. A3947Z11 is the US Velvet Black sales SKU, distinct from the hardware identifier. The service index also lists an A3947C guide, without proving a different hardware specification.

A39491Maker spec sheet (PDF)salesforce-knowledge-download.s3.us-west-2.amazonaws.com/000028308/en_US/000028308.pdfRead 7 October 2026EU/UK Declaration V3.0, first page names P20i and R50i as model A3949. Later A3949C FCC revision is not included.

GTIN / EAN

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AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

Not available

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Status

Available1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Current US maker A3947Z11 listing shows Velvet Black and Add to Cart. Current price is not used as launch evidence.

Available2Maker product pagesoundcore.com/products/p20iRead 7 October 2026US maker store offers product for purchase with current 3 to 7 business-day standard delivery. This is current availability, not launch timing.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

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SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

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Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$99.995Press releaseprnewswire.com/news-releases/liberty-4-nc-with-enhanced-adaptive-active-noise-cancelling-system-now-available-on-amazon-and-soundcorecom-301867453.htmlRead 8 October 2026Maker-issued June 29, 2023 release explicitly prices all five colours at USD 99.99. Current sale prices are not launch evidence.

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

US2Maker product pagesoundcore.com/products/p20iRead 7 October 2026Exact US maker storefront offers shipping and purchase. Other regional SKUs are not represented as variants.

ColoursiThe maker's own colour names

Velvet Black, Clear White, Navy Blue, Pastel Pink, Light Blue1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Five directly listed colour choices. Only the US Velvet Black reference row is represented.

Black2Maker product pagesoundcore.com/products/p20iRead 7 October 2026Black reference hardware. Other current colour finishes are omitted because exact revision equivalence to original A3949 is unproved.

Segment

Music1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

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Design

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Form factoriIn-ear seals the ear canal with a tip. Semi-in-ear rests in the outer ear without a seal. Open-ear leaves the ear canal unobstructed.

In-ear1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

In-ear4Reviewrtings.com/headphones/reviews/anker/soundcore-p25i-p20i-true-wirelessRead 7 October 2026Public sports verdict explicitly in-ear fit. Maker manual has fitted ear tips.

Bud shapeiStem describes an extending control or microphone stalk. Stemless describes a compact body without a stalk.

Stem1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Stem5Reviewscarbir.com/tws/soundcore-p20i-reviewRead 7 October 2026Original May 26 2023 review explicitly describes P20i with stems.

Use one bud aloneiWhich earbud can operate alone. This does not mean two earbuds can play from different sources.

Either bud3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026The complete CONTROLS table separately describes Mono mode and left/right controls. Either earbud can be worn alone, with a reduced mono control set.

Either bud2Maker product pagesoundcore.com/products/p20iRead 7 October 2026Maker Single Earbud Mode says take one earbud out of case to enter solo mode. Manual Mono controls are not limited to one named bud.3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 2 Mono controls are not restricted to a named side.

RGB lighting

Not available

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Drivers and sound

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Drivers per budiAudio transducers in one earbud. Rows distinguish their type, acoustic role and published diameter. Do not count microphones.

Asoundcore Liberty 4 NC

Type	Diameter (mm)
Dynamic	11

Source3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026SPECS explicitly identifies an 11 mm dynamic driver unit. A separately stated physical transducer count was not found, so no count is inferred from a single listed row.8Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000019752/en_US/000019752.pdfRead 8 October 2026

Bsoundcore P20i

Type	Diameter (mm)	Count per earbud
Dynamic	10	1

Source3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 10 mm dynamic driver. Physical single-driver count is explicitly supported by matching review specification.6Reviewiemsandmusic.com/soundcore-anker-p20i-reviewRead 7 October 2026Review specification explicitly (1) 10 mm dynamic driver. One driver per earbud. Acoustic role is not explicitly named, so omitted. Maker manual supplies diameter/type independently.

Driver typeiPublished transducer technology. High-excursion, composite and neodymium do not by themselves establish a driver type.

Dynamic3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026

Dynamic3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026English printed page 3 Specs Driver unit. Not inferred from diaphragm material.

Driver sizeiLargest explicitly published circular driver diameter in one earbud. A rectangular driver width is not a diameter.

11mm=CalculatedFrom Drivers per bud

10mm=CalculatedFrom Drivers per bud

Drivers per budiTotal audio transducers in one earbud, summed from explicit driver quantities. A row with an unknown quantity makes the total unknown.

Not available

1=CalculatedFrom Drivers per bud

Diaphragm material

Liquid Crystal Polymer (LCP)5Press releaseprnewswire.com/news-releases/liberty-4-nc-with-enhanced-adaptive-active-noise-cancelling-system-now-available-on-amazon-and-soundcorecom-301867453.htmlRead 8 October 2026Maker-issued June 29 release identifies the custom 11 mm driver as made of Liquid Crystal Polymer (LCP). This records the diaphragm material, without applying the polymer claim to the housing or voice coil.

Not available

Frequency responseiPublished acoustic frequency response of the earbuds. Codec transmission bandwidth alone does not qualify. Conditions belong in the source note.

Min20 HzMax40 kHz3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026SPECS publishes acoustic 20 Hz to 40 kHz response. Measurement tolerance, codec and test level are not stated. This is separate from codec transmission sample rate.8Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000019752/en_US/000019752.pdfRead 8 October 2026

Min20 HzMax20 kHz3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 Specs Frequency response. Published acoustic range, not transport bandwidth. Tolerance, codec and SPL conditions unstated.

Impedance

10Ω3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 20268Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000019752/en_US/000019752.pdfRead 8 October 2026

16Ω3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 Specs Impedance.

SensitivityiPublished acoustic sensitivity. The electrical reference and frequency must be stated in sensitivity_reference or the source note.

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Sensitivity reference

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Max sample rateiHighest supported audio sample rate under the codec and source-device conditions in the source note. This does not establish lossless playback.

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Max bit depthiHighest supported audio bit depth under the codec and source-device conditions in the source note. Bluetooth version alone does not establish this.

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Adaptive EQiAn inner mic tunes the sound to your ear in real time

Not available

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Personalised soundiA profile from a hearing test or ear scan

Yes1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Maker explicitly names HearID 2.0 and a tailored sound profile. Original manual also lists HearID sound. Exact retailer describes the hearing test used to create the profile.

Not available

Onboard EQ

Not available

Yes6Reviewiemsandmusic.com/soundcore-anker-p20i-reviewRead 7 October 2026Reviewer explicitly tested selected preset persisting after pairing another Bluetooth device and notebook. No custom band EQ inferred.

Custom EQ bandsiNumber of independently adjustable custom equalizer frequency bands. Availability may require current firmware, an app or a compatible device.

86Reviewsoundguys.com/anker-soundcore-liberty-4-nc-review-100100Read 8 October 2026Reviewer explicitly identifies eight independent custom equalizer bands, separate from its 22 preset effects. Full named preset list was not recovered, so preset names are not invented.

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EQ presetsiNamed equalizer sound presets. Noise-control modes and spatial-audio modes are separate features.

Not available

Soundcore Signature, Soundcore Signature + BassUp, Acoustic, Bass Reducer, Classic, Podcast, Dance, Deep, Electronic, Flat, Hip-Hop, Jazz, Latin, Lounge, Piano, Pop, R&B, Rock, Small Speaker(s), Spoken Word, Treble Booster, Treble Reducer6Reviewiemsandmusic.com/soundcore-anker-p20i-reviewRead 7 October 2026Reviewer app inspection lists 22 named presets. Current maker page confirms 22 and BassUp. Original May 2023 Scarbir review reports 21 presets without a firmware version. Stored names follow the later explicit list and are not a launch-feature promise.

Volume limit

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Spatial audio

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Spatial audioiNamed spatial or surround audio processing supported with the source and platform conditions stated in the source note.

3D surround sound3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026APP explicitly lists 3D surround sound. This is virtual processing, without inferring head tracking or native multichannel input.

Not available

Head trackingiSpatial audio changes with head movement. Static spatial processing alone does not qualify. Compatible device or content requirements belong in the source note.

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Noise cancelling

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Active noise cancelling

Yes1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

No2Maker product pagesoundcore.com/products/p20iRead 7 October 2026Maker P20i comparison column Noise Cancellation dash. Independently confirmed absent by readable RTINGS and GearLab reviews. Call AI noise reduction is separate.

ANC typeiFeedforward uses exterior microphones. Feedback uses interior microphones. Hybrid uses both. Adaptive control is separate from microphone placement.

Hybrid5Press releaseprnewswire.com/news-releases/liberty-4-nc-with-enhanced-adaptive-active-noise-cancelling-system-now-available-on-amazon-and-soundcorecom-301867453.htmlRead 8 October 2026Maker describes both an external sound sensor and an in-ear sound sensor for environmental and ear-canal noise detection. This maps to the schema hybrid ANC definition. Physical ANC microphone quantity is not inferred.

Not available

ANC microphones in both earbudsiPhysical microphones used by ANC across the pair. A shared call and ANC microphone counts once. Case microphones and vibration sensors are excluded.

Not available

Not available

Adaptive ANCiANC strength or calibration adjusts automatically to noise, fit or ear acoustics. The source note states the adjustment conditions.

Yes1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Not available

ANC levelsiNumber of selectable ANC strength levels. Excludes ANC off, transparency and activity profiles unless they explicitly set distinct strength levels.

56Reviewsoundguys.com/anker-soundcore-liberty-4-nc-review-100100Read 8 October 2026Reviewer identifies five manual strengths. Adaptive operation and transport profiles are separate and not counted as extra fixed strengths.

Not available

ANC attenuation (claimed)iManufacturer maximum claimed noise attenuation. Frequency and measurement conditions belong in the source note. This is not reviewer-measured overall attenuation.

38dB4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012512/en_US/000012512.pdfRead 8 October 2026Manufacturer QSG states that SGS lab testing found up to 38 dB at the deepest attenuation band and up to 19 dB comprehensive reduction. The exact frequency and method are not printed. The 98.5 percent headline is identified with the deepest-band performance, without conversion to dB. This is a maker-published claim, not an independently retrieved reviewer overall result.

Not available

Transparency mode

Yes1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

No7Reviewtechgearlab.com/reviews/audio/wireless-earbuds/soundcore-p20iRead 7 October 2026Exact P20i column Hear Through Mode No. Scarbir and IEM review agree.

Adjustable transparency

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Automatic ANC and transparency blendiAutomatically blends active cancellation with ambient sound. Automatic activity-based switching between separate modes alone does not qualify.

Not available

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Conversation detection

Not available

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Wind noise reductioniA documented physical design or processing feature for reducing wind noise. The source note distinguishes mesh or shape changes from selectable processing.

Yes6Reviewsoundguys.com/anker-soundcore-liberty-4-nc-review-100100Read 8 October 2026Reviewer explicitly identifies a user-selectable wind-reduction option in the ANC controls. This is distinct from microphone call-noise AI.

Not available

Measured

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Frequency response notes (measured)iMeasured by a reviewer, not claimed by the maker

Not available

Bass is emphasized. A dip in the low treble reduces clarity. Left and right drivers are fairly well matched in the reviewed sample.9Measurementrtings.com/headphones/reviews/anker/soundcore-p25i-p20i-true-wirelessRead 7 October 2026Public RTINGS Audio Reproduction Accuracy verdict, original Black A3949 P25i/P20i test unit. Current Test Bench 2.3. Public qualitative tested result, not estimated numeric graph data. Firmware, codec and exact playback level are unknown.

Bass amount (measured)iDeviation from the review source target in the bass range. Positive means more bass. Target, test method and settings belong in the source note.

Not available

Not available

Treble amount (measured)iDeviation from the review source target in the treble range. Positive means more treble. Values from different targets may not be directly comparable.

Not available

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Deviation from target (measured)iMeasured by a reviewer, not claimed by the maker

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Consistency between fittings (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Harmonic distortion (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Sound leakage (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Noise isolation (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Noise isolation, best (measured)iMeasured by a reviewer, not claimed by the maker

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Passive isolation (measured)iMeasured by a reviewer, not claimed by the maker

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Call quality notes (measured)iMeasured by a reviewer, not claimed by the maker

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Voice is clear but thin. The microphone does not separate speech from background noise well.9Measurementrtings.com/headphones/reviews/anker/soundcore-p25i-p20i-true-wirelessRead 7 October 2026Public RTINGS Microphone verdict for original Black A3949 P25i/P20i sample. Current Test Bench 2.3. Firmware, codec, host and exact microphone test noise level are not public.

Mic low-frequency extension (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Mic high-frequency extension (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Mic speech-to-noise ratio (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Latency (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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Bluetooth latency, worst (measured)iMeasured by a reviewer, not claimed by the maker

Not available

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2.4 GHz latency, worst (measured)iMeasured by a reviewer, not claimed by the maker

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Latency in game mode (measured)iThe best case the buds can reach. Measured by a reviewer

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Battery life (measured)iReviewer-tested operation from one full charge of the earbuds. Excludes case recharges. ANC, codec, connection, volume and tested edition belong in the row or source note.

Asoundcore Liberty 4 NC

ANC	Hours (h)
Yes	9.88

Source6Reviewsoundguys.com/anker-soundcore-liberty-4-nc-review-100100Read 8 October 2026SoundGuys purchased and reviewed exact A3947 Navy/Cosmic Blue hardware, firmware 03.82. With ANC enabled, one earbud charge ran 9 h 53 min, converted to hours. The linked general testing article does not specify the original test codec, host, level or ANC strength, so those settings remain unknown. This is a named reference test sample, not a measurement of every later production revision. The maker current 8 h ANC claim uses different published default/50-percent conditions, so the figures are not assumed directly comparable. The review case 50-hour discussion is not stored as a measured total.

Bsoundcore P20i

ANC	Hours (h)
No	9

Source9Measurementrtings.com/headphones/reviews/anker/soundcore-p25i-p20i-true-wirelessRead 7 October 2026Public RTINGS Travel and Office verdict report nine hours of continuous operation for black P25i/P20i A3949. Review says P25i and P20i differ only in name. Earbuds only, no ANC. Test Bench 2.3 review. Public battery method describes looped playback monitored by time-lapse and binaural recording in soundproof box, with level calibration. Exact sample codec, firmware, game mode and original calibrated SPL are not public, so unspecified. Rounded public nine-hour result used, protected detailed result not accessed.10Measurementrtings.com/headphones/tests/active-features/battery-lifeRead 7 October 2026Public continuous-battery methodology: one full earbud charge, case recharges excluded, looped track in soundproof box monitored by audio recording and time-lapse. Current method says calibrated 85 dB SPL. That does not prove exact original P20i test volume or codec.

Longest tested use per chargeiHighest earbuds-only duration among stored reviewer tests. Modes and settings may differ between tests and products.

9.88h=CalculatedFrom Battery life (measured)

9h=CalculatedFrom Battery life (measured)

Battery life with case (measured)iReviewer-tested total including earbuds and case recharges. Do not calculate this by multiplying one-charge runtime by claimed recharge count.

Not available

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Full charge time (measured)iBuds in the case, 0 to 100 %. Measured by a reviewer

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Weight per bud (measured)iMeasured by a reviewer, not claimed by the maker

Not available

4.25g(0.1 oz)7Reviewtechgearlab.com/reviews/audio/wireless-earbuds/soundcore-p20iRead 7 October 2026Spec table row Measured Weight: 4.25 g (0.15 oz), the reviewer scale result for the tested P20i. Tip size is not stated. The 4.3 g with tips in weight_g comes from another review and stays a separate published figure.

Microphones and calls

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Voice microphones in both earbudsiPhysical call and beamforming microphones across the pair. Excludes case microphones and vibration sensors. Shared ANC microphones can also count here when used for calls.

61Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Maker says six microphones with an AI algorithm for calls. Counts the physical microphones across the pair, without adding ANC functions as extra microphones.

22Maker product pagesoundcore.com/products/p20iRead 7 October 2026Maker AI-Enhanced Clear Calls says two built-in microphones used together for voice. Count across both earbuds, not per bud.

All microphones in both earbudsiEvery physical microphone across the pair, including call and ANC microphones. Shared microphones count once. Excludes the charging case and voice vibration sensors.

61Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026The maker explicitly lists six physical microphones. Shared ANC and call functions are counted once. No case microphone is inferred.

22Maker product pagesoundcore.com/products/p20iRead 7 October 2026Maker two built-in mics for pair. No playback ANC microphones exist. No case microphones are counted.

Bone conduction voice sensoriA dedicated bone or jaw conduction sensor for detecting speech vibrations. A microphone or speech-detecting accelerometer alone does not prove this architecture.

Not available

Not available

Mic noise reduction

AI1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

AI2Maker product pagesoundcore.com/products/p20iRead 7 October 2026Maker calls feature explicitly AI algorithm working with two microphones. This is voice processing, not playback ANC.

Call audio bandwidthiHighest supported call-audio bandwidth. Compatible phone, operating system, call app or network requirements belong in the source note.

Not available

Not available

Mic mute controliAn earbud control that mutes the microphone during calls. Includes touch or pressure gestures and physical buttons. Phone/app-only controls do not qualify.

Not available

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SidetoneiHear your own voice in calls

Not available

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Connectivity

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Chip

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Connections

Bluetooth1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Bluetooth3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026English page 1 Powering On and Pairing selects product in Bluetooth list. RTINGS public wired-gaming verdict says cannot be used wired.

Bluetooth

5.31Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 20268Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000019752/en_US/000019752.pdfRead 8 October 2026

5.33Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 Specs Bluetooth version. LE Audio and Auracast are not inferred from version.

Bluetooth codecs

SBC, AAC, LDAC6Reviewsoundguys.com/anker-soundcore-liberty-4-nc-review-100100Read 8 October 2026Exact A3947 review lists SBC, AAC and LDAC. LHDC or later-family LE Audio is not transferred.

AAC, SBC6Reviewiemsandmusic.com/soundcore-anker-p20i-reviewRead 7 October 2026Exact P20i review specification names AAC and SBC. Maker manual does not publish codecs. Scarbir independently names AAC.

Bluetooth profiles

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LE Audio

Not available

Not available

Auracast

Not available

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MultipointiConcurrent Bluetooth connections to multiple source devices. Pairing memory and switching through a manufacturer account alone do not qualify.

Yes1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

No4Reviewrtings.com/headphones/reviews/anker/soundcore-p25i-p20i-true-wirelessRead 7 October 2026Public Office Work paragraph explicitly no multi-device pairing and only one source at a time. GearLab table agrees. Pair memory not inferred.

Multipoint devicesiMaximum source devices concurrently connected by Bluetooth, not the number remembered in pairing history.

21Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Maker explicitly describes concurrent connections to two source devices. This is separate from saved pairing history.

14Reviewrtings.com/headphones/reviews/anker/soundcore-p25i-p20i-true-wirelessRead 7 October 2026Public Office Work states only one device can stay connected at a time. This is simultaneous connection limit, not stored pairing history.

Multipoint with LDACiMany buds turn multipoint off on LDAC

No1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Exact FAQ How do I enable LDAC mode states that enabling LDAC automatically exits multipoint. The original manual also explicitly disables two-device connection for LDAC.

Not available

Paired devices rememberediMaximum remembered Bluetooth source pairings. This is separate from simultaneous multipoint connections.

Not available

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Automatic switching between own devicesiThrough the maker's account

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Fast pairing

Google Fast Pair1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Not available

Audio sharingiShare one stream with a second pair

Not available

Not available

Wireless range (claimed)

10m3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026Published Bluetooth range 10 m / 33 ft. The direct metric claim is used, without converting the rounded feet value.8Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000019752/en_US/000019752.pdfRead 8 October 2026

10m3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 Bluetooth range. Maker claim. No measured range inferred.

Wireless receiveri2.4 GHz dongle

Not available

Not available

Receiver connector

Not available

Not available

Simultaneous 2.4 GHz and Bluetooth audioiBoth connection types can play audio together. Quick switching between independent modes does not qualify.

Not available

Not available

Latency

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Low latency mode

Yes1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Yes3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 1 App lists gaming mode. RTINGS public introduction identifies Game Mode as lowering latency. No numerical latency claim is published.

Claimed latency

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Lowest claimed latency

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Compatibility

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PlatformsiPlatforms with documented audio support. App availability and advanced features can be more limited. Edition-specific support is listed in variants.

Android, iOS, Windows, macOS1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Exact maker FAQ covers phone use, Mac audio and Windows audio. App availability remains limited to Android and iOS.

Android, iOS6Reviewiemsandmusic.com/soundcore-anker-p20i-reviewRead 7 October 2026Exact P20i review specification explicitly Android and iOS. Audio connection uses Bluetooth. Host restrictions and console support are not inferred.

Connection per platformiDocumented audio connection for each platform. USB-C phone routes require a compatible port. Platform edition and microphone restrictions belong in source notes or feature requirements.

Asoundcore Liberty 4 NC

Platform	Connection	Microphone works
Windows	Bluetooth	Yes
macOS	Bluetooth	Yes

Source1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Maker computer-call FAQ explicitly gives Liberty 4 NC Hands-Free as both input and output on conferencing apps. This does not establish console support or USB audio.

Bsoundcore P20i

Not available

Features that need a specific deviceiDevice, operating system, firmware, codec, content, account or region requirements for a named feature.

Asoundcore Liberty 4 NC

Feature	Needs
LDAC playback	Compatible Android 8.0 or later source. Enable Preferred Audio Quality in the soundcore app and install the required earbud firmware update. LDAC disables multipoint.
Full app features	Maker recommends soundcore app 3.2.7 or later and current earbud firmware. The companion app is not available for computers.
Computer calls	On Windows, select Liberty 4 NC Hands-Free for microphone and speaker in the call app. The maker Mac computer guidance instead says to select Liberty 4 NC for input and output. Stereo playback and hands-free calls use different Bluetooth audio modes.

Source1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Current maker FAQ states Android 8.0 minimum for LDAC, a firmware update to enable it, and mutually exclusive LDAC and multipoint. App 3.2.7 and later is the maker recommendation for full features, without asserting that this is the latest app version. Windows conferencing guidance specifically names the Hands-Free endpoint. The separate Mac computer guidance names Liberty 4 NC without that suffix. The visible requirement preserves both platform scopes.8Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000019752/en_US/000019752.pdfRead 8 October 2026LDAC section explicitly requires Android 8.0 or later and excludes two-device connection while LDAC is enabled. Additional regulatory and security sections are not treated as proof that old reviewed firmware is current.

Bsoundcore P20i

Not available

Official licence

Not available

Not available

Battery and charging

10 of 13 differ

Battery per budiBattery cell capacity of one earbud. The source note states typical or rated capacity. Charging input current is not capacity.

53mAh3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026SPECS explicitly states 53 mAh x 2 earbuds, so 53 mAh per bud. Typical versus rated capacity and nominal cell voltage are not labelled.8Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000019752/en_US/000019752.pdfRead 8 October 2026Current official service-index A3947C English guide has the same complete core table: 53 mAh x 2 earbuds, 800 mAh case, 11 mm dynamic, 20 Hz to 40 kHz, 10 ohms, Bluetooth 5.3 and 10 m. This corroborates the published hardware facts without proving universal performance equivalence between revisions.

60mAh3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 Battery capacity 60 mAh x 2 earbuds. Per-bud rating, typical/rated qualifier unstated. Not charging current.

User-replaceable earbud batteryiThe maker documents normal battery replacement by the user with its approved procedure and tools. Service or recycling disassembly does not count.

Not available

No11Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3949Safety.pdfRead 10 October 2026Maker-hosted A3949Safety.pdf, English Important Safety Instructions: "Do not disassemble." Neither the manual nor the safety sheet documents a user battery replacement procedure. The sheet is shared boilerplate (HPS02) and also carries the generic recycling line "Replace only with specified batteries", which describes no user procedure.

Claimed battery lifeiManufacturer maximum runtime under the stated mode, codec and spatial processing state. Name the spatial or immersive processing mode and other conditions in source notes. Omit unspecified settings. with_case false means one charge of the earbuds. true means earbuds plus case recharges.

Asoundcore Liberty 4 NC

Mode	Codec	Includes case recharges	Hours (h)
ANC off	Not available	No	10
ANC off	Not available	Yes	50
ANC on	Not available	No	8
ANC on	Not available	Yes	40
Transparency	Not available	No	8
Transparency	Not available	Yes	40
ANC off	LDAC	No	6
ANC off	LDAC	Yes	30
ANC on	LDAC	No	5
ANC on	LDAC	Yes	25
Call	Not available	No	4.5

Source2Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Exact playtime FAQ: Normal 10 h earbuds / 50 h total, ANC 8 h / 40 h, transparency 8 h / 40 h, LDAC with ANC 5 h / 25 h and LDAC without ANC 6 h / 30 h. The non-LDAC codec is not named, so AAC or SBC is not guessed. Tests use Anker laboratory default settings and 50 percent volume. The text normal-mode qualifier is not applied to ANC/LDAC rows as a contradictory operating setting. Call row is the separately stated ANC-off 4.5 h. ANC-on calls 4 h cannot be distinguished by the call enum, so are qualified here rather than duplicated with no visible ANC distinction. Case figures mean earbuds plus case recharges, as explicitly confirmed by the original manual, not extra case runtime alone.

Bsoundcore P20i

Mode	Includes case recharges	Hours (h)
ANC off	No	10
ANC off	Yes	30

Source3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 up-to claims. Earbuds have no playback ANC. Ten hours from earbuds alone, 30 total including case. Volume and content affect runtime. Codec, volume percentage, host and firmware unstated.

Longest claimed use per chargeiHighest earbuds-only runtime among all stored modes. This can be ANC off, Hearing Aid, heart-rate or call use. Read the battery table and source conditions.

10h=CalculatedFrom Claimed battery life

10h=CalculatedFrom Claimed battery life

Playback per charge with ANC (claimed)iHighest claimed earbuds-only playback with ANC enabled. Codec and spatial-audio conditions belong in the source note.

8h=CalculatedFrom Claimed battery life

Not available

Playback per charge without ANC (claimed)iHighest claimed earbuds-only playback with ANC disabled. Codec and volume conditions belong in the source note.

10h=CalculatedFrom Claimed battery life

10h=CalculatedFrom Claimed battery life

Total with case (claimed)iHighest claimed runtime including the initial earbud charge and all case recharges. It is not the case recharge runtime alone.

50h=CalculatedFrom Claimed battery life

30h=CalculatedFrom Claimed battery life

Total with case and ANC (claimed)iClaimed total playback with ANC, including the initial earbud charge and case recharges.

40h=CalculatedFrom Claimed battery life

Not available

Talk time (claimed)

4.5h=CalculatedFrom Claimed battery life

Not available

Full charge time, budsiTime to charge discharged earbuds to full in the case. Excludes charging the case itself or a combined buds-and-case result.

90min1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Charging FAQ directly reports around 1.5 hours to fully charge the earbuds, converted to 90 minutes. Approximate maker estimate, with adapter and initial percentage not separately stated.

Not available

Charging guidanceiPublished charging guidance or estimates that do not separate earbuds and case. Preserve the maker’s component scope and limits. Do not assign an unspecified or combined estimate to a component-specific numeric field.

The maker estimates about 1.5 hours for a full earbud charge in the case, about 3 hours for the case by cable, or 3.5 hours for the case wirelessly. Ten minutes of charging is claimed to provide four hours of earbud playback. The manual lists a 5 V / 0.8 A input. Use a certified USB-C charging cable and fully dry the buds and charging port first. ANC, LDAC, calls and volume affect runtime. LDAC and multipoint cannot be used together.2Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Component-specific full-charge times come from the current maker FAQ. The original manual table only says up to 3 hours without component scope, so that generic table alone does not establish earbud-only timing. Input 5 V / 0.8 A is literal. No accepted charging watts are derived. Current A3947C guide separately lists a compatible Anker A2337 30 W adapter, which is not a bundled adapter or device input rating.

Maker spec table lists charging time up to 2 hours without saying whether this is the earbuds, the case or both.3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026English printed page 3 Specs, Charging time: Up to 2 hours. The row names no component. The charging page shows 10 minutes gives 2 hours of playback, which is the stored quick charge claim.

Quick charge timeiCharge duration corresponding to quick_charge_playback_h. Source note states earbuds-only or case-inclusive charging and playback settings.

10min1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

10min2Maker product pagesoundcore.com/products/p20iRead 7 October 2026Maker says earbuds low on power and 10-minute charge gives two hours playtime. Manual English page 1 charging diagram matches. Buds charge in case. Codec and volume unstated.

Earbud playback after quick chargeiEarbuds-only runtime after quick_charge_min of charging. A claimed case-inclusive total does not qualify. ANC, codec and volume conditions belong in the source note.

4h1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Maker states 10 minutes for 4 hours. Public RTINGS Office paragraph explicitly describes a ten-minute charge in the case yielding four hours of playback. ANC, codec and volume for this quick-charge claim are not stated, so they remain unknown.9Reviewrtings.com/headphones/reviews/anker/soundcore-liberty-4-nc-truly-wirelessRead 8 October 2026Public Office paragraph explicitly describes four hours of playback after ten minutes of charging in the case. The numerical battery/latency/isolation tables are members-only and were not accessed or bypassed.

2h2Maker product pagesoundcore.com/products/p20iRead 7 October 2026Earbud playback after 10 minutes in charging case, not case-inclusive total. Source names low-power earbuds. Codec, volume and exact starting state unstated.

Charging case

5 of 10 differ

Case batteryiCharging-case battery cell capacity. The source note distinguishes typical, rated and output capacity. USB output capacity alone does not qualify.

800mAh3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026SPECS explicitly identifies 800 mAh charging-case capacity. No output capacity or energy conversion is substituted.8Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000019752/en_US/000019752.pdfRead 8 October 2026

430mAh3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 Battery capacity explicitly charging-case cell. Typical/rated qualifier unstated. Not USB output capacity.

User-replaceable case batteryiThe maker documents normal case battery replacement by the user with its approved procedure and tools. Service or recycling disassembly does not count.

Not available

No11Owner's manuallp.ankerjapan.com/hubfs/aoos/manual/A3949Safety.pdfRead 10 October 2026Same safety sheet and manual. Do not disassemble, no user replacement procedure for the charging case battery either.

Case charging port

USB-C3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026

USB-C3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 1 Charging explicitly USB-C charging port. This is power input, not audio.

Case full charge timeiBy cable, 0 to 100 %. A time the maker gives with the earbuds inside the case counts, and the source note says so.

180min1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Charging FAQ reports around 3 hours to fully charge the case via a wall charger, converted to 180 minutes. Separate wireless estimate is 3.5 hours. This is not a reviewer measurement.

Not available

Wireless charging

Yes3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026

No7Reviewtechgearlab.com/reviews/audio/wireless-earbuds/soundcore-p20iRead 7 October 2026Exact P20i Tested Wireless Charging Option No. Maker only documents wired USB-C. Later EU declaration includes EN 303 417 in standards applied in part or whole, which does not prove wireless charging on this product.

Wireless standardsiDocumented case charging standards or supported chargers. Magnetic alignment alone does not establish Qi2 certification.

Qi6Reviewsoundguys.com/anker-soundcore-liberty-4-nc-review-100100Read 8 October 2026Battery section explicitly describes charging the case on a Qi pad. Magnetic alignment, Qi2 and charging wattage are not inferred.

Not available

Wireless charging poweriHighest wireless charging input the maker states for the case. The output of a charging pad does not count.

Not available

Not available

Speaker in caseiAn audio speaker physically in the charging case, for locating or status sounds. A microphone in the case is separate.

Not available

Not available

Screen on case

Not available

Not available

Case works as audio transmitteriCase relays external source audio through USB or an analog audio input. A case microphone for recording or calls does not qualify.

Not available

Not available

Controls

2 of 5 differ

ControlsiPressure is a force sensor that does not move, such as a stem you squeeze. Button is a key that moves when pressed.

Touch1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Touch3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 2 Manual Pairing and Controls explicitly touchpads and tap controls.

Earbud volume controliHow earbud controls adjust volume, including a voice command if supported. Phone or app controls alone do not qualify.

Touch1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Maker FAQ says to customize earbud volume controls in soundcore. Original manual identifies these as touch controls. Phone-only volume controls are not substituted.

Touch5Reviewscarbir.com/tws/soundcore-p20i-reviewRead 7 October 2026Reviewer explicitly states app lets you add volume controls to touch panels. Volume is absent from default manual control mapping. Requires remapping through app.

Gestures

Single tap: play/pause, Double tap right: next track, Double tap left: previous track, Double tap: answer call, Hold 2 seconds: end/reject call or switch ANC/transparency3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026Original manual defaults differ slightly from the SoundGuys firmware 03.82 table. Manufacturer defaults are retained. App assignments remain customizable.

Double tap right earbud to play or pause, Hold left earbud for 2 seconds for previous track, Hold right earbud for 2 seconds for next track, Double tap either earbud to answer or end a call, Hold either earbud for 2 seconds to reject a call, Double tap left earbud to activate voice assistant software3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026English printed page 2 default TWS controls. Mono has double tap for play/pause and calls and hold to reject. All labels describe factory mapping, which app can change.

Remappable controls

Yes1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Yes3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 2 says controls can be customized in soundcore app.

Voice assistant

Not available

Voice assistant software3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 2 generic host assistant trigger. Siri, Google Assistant and Alexa brands are not named for exact product and are omitted.

Sensors and health

2 of 9 differ

In-ear detection

Yes3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026

No7Reviewtechgearlab.com/reviews/audio/wireless-earbuds/soundcore-p20iRead 7 October 2026Exact P20i In-ear Detection No and App Features paragraph says no automatic pause when removing a bud.

Sensors

Not available

Not available

Heart rate sensor

Not available

Not available

Skin temperature sensingiA documented skin temperature sensor. This is separate from the operating temperature range or a heart-rate sensor.

Not available

Not available

Hearing aid featureiAmplification for mild to moderate hearing loss

Not available

Not available

Medical clearances

Not available

Not available

Hearing testiA documented hearing assessment feature, including consumer sound-personalization tests. Medical diagnostic clearance must be stated separately.

Yes7Retailer pagecrutchfield.com/p_318A3947Z1/Anker-Soundcore-Liberty-4-NC.htmlRead 8 October 2026Exact US Velvet Black retailer public indexed description states that HearID tests hearing and creates a tailored sound profile. This is consumer sound personalization, not medical diagnostic clearance.

Not available

Hearing protectioniLimits sudden loud sounds

Not available

Not available

Health features

Not available

Not available

Fit and durability

4 of 7 differ

Ear tips includediTip sizes supplied with the product, including the pair fitted to the earbuds. Do not list separately sold sizes as included.

XS, S, M, L3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026WEARING diagram explicitly shows XS, S, M and L. The reference retail box confirms four pairs with one fitted pair.

S, M, L3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 1 Wearing names S M L. Scarbir explicitly includes three sets, and IEM reviewer confirms three supplied silicone pairs.

Ear tip materials

Silicone7Retailer pagecrutchfield.com/p_318A3947Z1/Anker-Soundcore-Liberty-4-NC.htmlRead 8 October 2026Exact US Velvet Black retailer indexed box list explicitly states four pairs of silicone tips. The current manufacturer manual independently lists XS, S, M and L.

Silicone7Reviewtechgearlab.com/reviews/audio/wireless-earbuds/soundcore-p20iRead 7 October 2026Review experience explicitly included multiple silicone tips. IEM unboxing confirms three pairs.

StabilisersiPhysical stabilizing fittings or structures. Stability bands are separate from fins, wings and ear hooks.

None6Reviewsoundguys.com/anker-soundcore-liberty-4-nc-review-100100Read 8 October 2026Review FAQ explicitly says there are no stabilizers or over-ear hooks. This is direct negative evidence, not an omission from a box list.

Not available

Ear tip fit test

Yes1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

No7Reviewtechgearlab.com/reviews/audio/wireless-earbuds/soundcore-p20iRead 7 October 2026Exact P20i Ear Fit Test No. This is app fit testing, not reviewers fitting earbuds manually.

Dust and water rating, buds

IPX41Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

IPX53Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 Waterproof level explicitly Earbuds. Does not apply to case and is not submersion approval.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

0 of 6 differ

Companion app

soundcore1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

soundcore3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 1 App names soundcore.

App platforms

Android, iOS1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Android, iOS5Reviewscarbir.com/tws/soundcore-p20i-reviewRead 7 October 2026Exact review says free Soundcore app for iPhone and Android. Maker manual shows Google Play and Apple app marks.

User firmware updates

Yes1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Yes3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Printed page 3 Firmware Update explicitly update through app, earbuds in charging case with lid open and charging.

Finding network

Not available

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Not available

Dimensions and weight

2 of 4 differ

Weight per budiMass of one earbud. Tip size and approximate values belong in the source note. Do not store pair or case-inclusive mass.

5.2g(0.2 oz)1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026Current maker specifications state 5.2 g without case for the earbud. Tip size is not named. SoundGuys lists 5.7 g per bud without claiming that value as a measurement, so it is not imported into the measured-weight field or substituted for this maker claim.

4.3g(0.2 oz)6Reviewiemsandmusic.com/soundcore-anker-p20i-reviewRead 7 October 2026Published review specification for one side with tips. The source does not explicitly say it used a scale, so this is a published weight, not measured_weight_g.

Bud dimensionsiDimensions of one earbud on the explicitly identified width, height and depth axes. An unlabeled tuple cannot establish those axes.

Not available

Not available

Case weightiCharging case mass excluding earbuds. Case-inclusive product mass does not qualify unless the source explicitly gives the empty-case figure.

Not available

Not available

Case dimensionsiCharging-case width, height and depth on explicitly identified source axes. Report conflicting axis labels rather than reorder a tuple by appearance.

Not available

Width58Height52Depth27mm(2.3 × 2 × 1.1 in)6Reviewiemsandmusic.com/soundcore-anker-p20i-reviewRead 7 October 2026Review explicitly labels H 5.2 cm, W 5.8 cm, D 2.7 cm. Exact conversion to mm. Source axes retained without reordering by appearance. Maker does not publish axes.

Certifications

1 of 3 differ

Hi-Res AudioiThe Japan Audio Society logos. Hi-Res Audio Wireless is also written Hi-Res Wireless Audio.

Hi-Res Audio Wireless1Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Not available

Communication certifications

Not available

Not available

FCC IDs

Not available

2AOKB-A39498Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012332/en_US/000012332.pdfRead 7 October 2026Original official A3949 QSG printed label FCC ID. Later 2AOKB-A3949C hardware is not included.

Other certifications

Not available

Not available

In the box

2 of 2 differ

In the box

Left and right earbuds, Charging case, Four pairs of silicone ear tips, USB-A to USB-C charging cable, Quick Start Guide, Important Safety Instructions7Retailer pagecrutchfield.com/p_318A3947Z1/Anker-Soundcore-Liberty-4-NC.htmlRead 8 October 2026Exact US Velvet Black retailer public indexed box list was captured October 8, 2026. Full ordinary web open later showed only the footer and local requests returned an access challenge. No bypass attempted. Four tip pairs include one installed pair. Charging adapter and optional soundcore Care are not listed.

P20i earbuds, Charging case with removable lanyard, Silicone ear tips (S, M, L), USB-A to USB-C charging cable6Reviewiemsandmusic.com/soundcore-anker-p20i-reviewRead 7 October 2026Matching black P20i reviewer unboxing and Accessories section. Three tip pairs include attached pair. No power adapter is documented as included.

Cables included

Asoundcore Liberty 4 NC

Type	Count
USB-A to USB-C	1

Source7Retailer pagecrutchfield.com/p_318A3947Z1/Anker-Soundcore-Liberty-4-NC.htmlRead 8 October 2026Retailer explicitly lists one USB-A to USB-C cable. Retailer length 12 inches differs from SoundGuys 0.33 m, so length is omitted rather than reconciling rounded or regional cable figures.

Bsoundcore P20i

Type	Count
USB-A to USB-C charging cable	1

Source6Reviewiemsandmusic.com/soundcore-anker-p20i-reviewRead 7 October 2026Accessories explicitly a USB-A to USB-C cable. Length unstated.

Links

Not compared

Product page

www.soundcore.com/products/liberty-4-nc-a3947z111Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

www.soundcore.com/products/p20i2Maker product pagesoundcore.com/products/p20iRead 7 October 2026Readable exact P20i maker page.

Spec sheet

www.soundcore.com/products/liberty-4-nc-a3947z111Maker product pagesoundcore.com/products/liberty-4-nc-a3947z11Read 8 October 2026

Not available

Manual

salesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdf3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012513/en_US/000012513.pdfRead 8 October 2026Original A3947 User Manual linked by the current official service index. Its English APP, WEARING, CONTROLS, LDAC, WEARING DETECTION and SPECS sections were read. The separately listed newer A3947C guide has the same core specification table, but no universal hardware-revision equivalence is asserted.

salesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdf3Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012334/en_US/000012334.pdfRead 7 October 2026Official A3949 P20i User Manual from readable maker support download link. English printed pages 1 to 3 read.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

0 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1.5years4Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012512/en_US/000012512.pdfRead 8 October 2026Original official QSG CUSTOMER SERVICE states an 18-month limited warranty, converted to 1.5 years. Its additional-consumer-rights note distinguishes the warranty from statutory rights. Optional paid soundcore Care is separate.

1.5years8Owner's manualsalesforce-knowledge-download.s3.us-west-2.amazonaws.com/000012332/en_US/000012332.pdfRead 7 October 2026Original A3949 multilingual QSG gives 18-month limited warranty, including English text and US/Canada customer service. Warranty period quoted for original North American reference, statutory rights separate.

Both are also in the API. Back to all earbuds.