Earbuds / Compare

soundcore Liberty 4 NC vs TOZO T6

A

Product A: soundcore

Liberty 4 NC

81 of 166 known

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B

Product B: TOZO

T6

50 of 166 known

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Every value links to where we found it.

Only differences

Asoundcore Liberty 4 NC

BTOZO T6

General

5 of 8 differ

Series

Not available

T Series1Maker product pagetozostore.com/products/t6Read 16 October 2026The store tags the product as T Series.

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.

T61Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Model: T6. The pairing name is TOZO T6. No regulatory model code is published.

GTIN / EAN

Not available

6971681317739, 6971681317753, 6971681317777, 6971681317746, 6971681317760, 69716813177842Maker product pagetozostore.com/products/t6.jsRead 16 October 2026Store barcode field for Black 6971681317739, Sky Blue 6971681317753, Champagne 6971681317777, Rose Gold 6971681317746, Green 6971681317760 and White 6971681317784.

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

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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 pagetozostore.com/products/t6.jsRead 16 October 2026The store lists the product as available on 2026-10-16.

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.

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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

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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

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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.

Black, Sky Blue, Champagne, Rose Gold, Green, White2Maker product pagetozostore.com/products/t6.jsRead 16 October 2026Store option names, verbatim. The tech specs row Color lists Black, Green, White, Champagne, Rose Gold and Skyblue for both the Classic Edition and the Ergonomic with APP Edition (2024), so the store option names are used.

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-ear1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Type: In-ear True Wireless.

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

Stemless1Maker product pagetozostore.com/products/t6Read 16 October 2026The earbuds are a compact body with no stalk, as shown in the product photos.

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.

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RGB lighting

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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

BTOZO T6

Type	Diameter (mm)	Count per earbud
Dynamic	6	1

Source1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Driver: 6 mm dynamic driver. The manual lists the speaker type as 6 mm x 2, which is read as one driver in each of the two earbuds. No driver role is named.

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

Dynamic1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Driver: 6 mm dynamic driver.

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

11mm=CalculatedFrom Drivers per bud

6mm=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.

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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

Min18 HzMax20 kHz1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Frequency response range: 18 Hz - 20 kHz. Maker figure with no stated conditions.

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 manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 7.0 Specification: Impedance 16 ohm. The Classic Edition manual says 16 ohm plus or minus 15 percent.

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

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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.

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Onboard EQ

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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.

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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.

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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

No1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs group Noise cancellation lists only Call noise cancellation: ENC call noise reduction. No active noise cancelling is listed. Major HiFi and SoundGuys both say the T6 has no ANC.4Reviewsoundguys.com/tozo-t6-review-82110Read 16 October 2026Review: no extra features like active noise canceling, a barebones set of true wireless earbuds. The reviewed unit had a micro USB case port, so it was earlier hardware than the USB-C edition stored here.5Reviewmajorhifi.com/tozo-t6-reviewRead 21 October 2026Review of 29 July 2024: no active noise-canceling, and No ANC is listed under cons. The unit has Bluetooth 5.3, a companion app with EQ and a 26.99 USD price, so it is the current T6.

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.

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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.

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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

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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

No4Reviewsoundguys.com/tozo-t6-review-82110Read 16 October 2026Review: buyers who do not need transparency mode will like the IPX8 rating. Major HiFi says the T6 has no environmental features.5Reviewmajorhifi.com/tozo-t6-reviewRead 21 October 2026Same review: no active noise-canceling or environmental features. Read as no transparency mode.

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

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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.

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Measured

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

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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.

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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.

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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

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

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

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

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

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

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

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

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

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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.

BTOZO T6

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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)

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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.

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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

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Microphones and calls

3 of 7 differ

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.

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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.

Not available

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

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Mic noise reduction

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

DSP1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Call noise cancellation: ENC call noise reduction. ENC is a processing feature for calls, so dsp is stored. The page names no microphone count.

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

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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.

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SidetoneiHear your own voice in calls

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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

Bluetooth1Maker product pagetozostore.com/products/t6Read 16 October 2026Bluetooth only. No other connection is listed.

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

5.31Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Bluetooth version: Bluetooth 5.3. The feature text says Advanced Bluetooth 5.3 Technology.

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, SBC1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Audio codec: AAC/SBC.

Bluetooth profiles

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A2DP, AVRCP, HFP, HSP1Maker product pagetozostore.com/products/t6Read 16 October 2026Feature text: supports HSP, HFP, A2DP and AVRCP. The manual lists A2DP, AVRCP, HFP and HSP.

LE Audio

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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

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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.

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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.

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

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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

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Audio sharingiShare one stream with a second pair

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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

10m1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Effective Bluetooth range: 10 m. The manual says the signal works normally within 12 m and is interrupted beyond 12 m.

Wireless receiveri2.4 GHz dongle

Not available

Not available

Receiver connector

Not available

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

Not available

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Latency

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Low latency mode

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

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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.

Not available

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.

BTOZO T6

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.

BTOZO T6

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Official licence

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Battery and charging

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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.

40mAh1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Battery capacity: 40 mAh for the earphones. The page does not say whether the figure is one earbud or the pair. It is stored as one bud, as on the TOZO A1 listing.

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

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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.

BTOZO T6

Mode	Codec	Includes case recharges	Hours (h)
ANC off	AAC	No	12
ANC off	AAC	Yes	50

Source1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Music play time (AAC, default setting, 50% volume): 12 h on a single charge and 50 h with the charging case. The tags and an older blog post say up to 45 hours total, so TOZO has used more than one figure.

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

12h=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

12h=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

50h=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.

120min1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Cable charge time: 2 h for the earphones. The page does not say how the earbuds are charged, so the earbud time is read as charging in the case. The older Classic Edition manual says 1.7 hours for the earbuds and 1.8 hours for the case.

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.

The manual says to charge the case with a 5V/1A adapter, which can be a computer USB port or another USB charger.3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 5.2: use the 5V/1A adapter to charge the charging case, which can be charged with a computer USB or another USB interface charger.

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

Not available

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.

Not available

Charging case

2 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

400mAh1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Battery capacity: 400 mAh for the charging case.

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

Not available

Case charging port

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

USB-C1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Charging port: USB Type-C. The product photo says Type-C interface cable charging and the manual diagram labels the case port USB-C. An older TOZO blog post and SoundGuys describe a micro USB port on earlier units.

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.

60min1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Cable charge time: 1 h for the charging case. The older Classic Edition manual says 1.8 hours for the case.

Wireless charging

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

Yes1Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Wireless charging: Wireless charging supported. No wireless standard or power is named.

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.

Qi4Reviewsoundguys.com/tozo-t6-review-82110Read 16 October 2026Review: the case charges using microUSB or wireless Qi charging. The reviewed unit was earlier hardware with a micro USB port. The maker page and manual state wireless charging for the stored edition and name no standard.

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 manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 6.0 Button operation: touch panel gestures on both earbuds.

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.

Touch3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Sections 6.2: tap and hold R to increase and L to decrease the volume.

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.

Press twice on the left earbud: previous song, Press twice on the right earbud: next song, Press once on either earbud: play or pause, Press and hold the left earbud: volume down, Press and hold the right earbud: volume up, Press once on either earbud: answer a call, Press and hold either earbud for 2 seconds: hang up or reject a call, Press three times on either earbud: wake up the voice assistant3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Sections 6.2 to 6.4, English wording shortened. Calls: tap L/R to answer, hold L/R for 2 seconds to hang up or reject. Triple tap L/R wakes up the voice assistant.

Remappable controls

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

Yes3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 9.0 TOZO APP: most of the controls can be customized in the app.

Voice assistant

Not available

Phone voice assistant3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 6.4: triple tap wakes up the voice assistant. No assistant is named, so it is the phone's own.

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

Not available

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

5 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.

XXS, XS, S, M, L, XL3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 2.0 Packing list shows XL, L, M, S, XS and XXS ear tips, with the M tips pre-attached. The store text lists XS/S/M/L/XL/XXL, so the manual is used.

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.

Not available

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

Not available

Dust and water rating, buds

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

IPX81Maker product pagetozostore.com/products/t6Read 16 October 2026Tech specs row Water resistance - earphone: IPX8. No rating is stated for the case.

Dust and water rating, case

Not available

Not available

Water resistance depth

Not available

Not available

Software

2 of 6 differ

Companion app

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

TOZO app3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 9.0 TOZO APP: UI customization, EQ settings and firmware updates.

App platforms

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

iOS, Android3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 10.0 shows App Store and Google Play badges for the TOZO app.

User firmware updates

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

Yes3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 9.0 TOZO APP: the earbuds firmware can be updated in the app.

Finding network

Not available

Not available

Precision findingiUWB in the case

Not available

Not available

Live translation

Not available

Not available

Dimensions and weight

1 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.

4.5g(0.2 oz)1Maker product pagetozostore.com/products/t6Read 16 October 2026Feature text: Mini Compact, only 4.5g, smaller than coin. The text does not say that the figure is for one earbud. It is read as one earbud, since SoundGuys weighed the earlier T6 at 4.4 g per earbud.

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

Not available

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

2ASWH-BLE6Regulatory filingfccid.io/2ASWH-BLERead 21 October 2026FCC grant 2ASWH-BLE, True wireless earphones, grantee Shenzhen Worgo Technology Limited, which lists tozostore.com as its website. The ID label shows M/N: T6. The test report DL-20220916009E names TOZO T6 as the main model, tested from September 2022. It is a family grant with one circuit and RF module for 19 other model names. It predates the 2023 store listing, so the grant may cover an earlier board revision.

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.

Earbuds, Charging case, Type-C cable, Ear tips (XL, L, M, S, XS, XXS), User manual, Quick guide3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 2.0 Packing list: earbuds, charging case, Type-C cable, ear tips, user manual and quick guide. The store lists a USB charging cable and 4 pairs of eartips.

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.

BTOZO T6

Type	Count
USB-C	1

Source3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Section 2.0 Packing list shows one Type-C cable. No length is given.

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.tozostore.com/products/t61Maker product pagetozostore.com/products/t6Read 16 October 2026

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.

s3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdf3Owner's manuals3-us.tozostore.com/tozo/pdfRenderer/web/docs/UserManual/TOZO/T6_Mini.pdfRead 16 October 2026Image-only PDF, the T6 Mini file on the maker's manual page. The store product photos for the T6 are named t6mini and show the same USB-C case. The Classic Edition manual (T6.pdf) lists A2DP, AVRCP, HFP, HSP, a 12 m transmission distance, 6 mm x 2 speakers and 16 ohm plus or minus 15 percent.

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.

1.5years1Maker product pagetozostore.com/products/t6Read 16 October 2026Store banner: 12+6 months hassle-free warranty. Stored as 1.5 years for the TOZO US store.

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