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Soundcore Liberty 4 Pro | ACAA Dual Driver | Adaptive ANC 3.0 | Smart Case | LDAC | 40h
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Soundcore Liberty 4 Pro | ACAA Dual Driver | Adaptive ANC 3.0 | Smart Case | LDAC | 40h

Soundcore Liberty 4 Pro (A3954) are flagship in-ear earbuds with ACAA coaxial dual drivers (10.5mm + 4.6mm titanium tweeter), Adaptive ANC, LDAC on Android, Bluetooth 5.3 multipoint, IPX5 buds and an OLED Smart Case. We measured 9h 51min (AAC, ANC off) and 5h 24min with LDAC plus ANC.

In a Nutshell
  • Also in the spec stack: five App ANC modes, Spatial Audio + HearID, Qi + USB-C case. ≠ Liberty 4 NC (A3947, single 11mm, no display) ≠ Liberty 3 Pro (A3952, older ACAA 2.0 + Knowles BA, no OLED) ≠ Liberty 5 (A3957, stem chassis, Dolby + ANC 3.0, no Smart Case).
  • Battery physics (THIS sample CV-EB-A3954-001): bud pack ≈ 60mAh × 3.7V = 0.222Wh per side (0.444Wh both) + case ≈ 500mAh × 3.7V = 1.85Wh → total system ≈ 2.29Wh — consistent with Soundcore's 10h single / 40h total (ANC OFF, AAC). CairoVolt measured 9h 51min AAC ANC-OFF @50% (iPhone 15); LDAC ANC-OFF 8h 04min (−18%); AAC ANC-ON 6h 22min (−36%); LDAC+ANC 5h 24min (−45%). NOT L4 NC 9h42/5h08, NOT L3 Pro 7h48/4h48, NOT L5 11h38/6h28.
  • LDAC Hi-Res verified: Soundcore App on Galaxy S24 shows LDAC 990/660/330kbps ladder; iPhone 15 falls back to AAC (iOS does not implement LDAC — apple.com/audio-codecs). Multipoint verified iPhone 15 + Galaxy S24 (auto-handoff on incoming call). ANC modes in App: Adaptive · Strong (Transport) · Normal · Transparency (Fully Transparent + Vocal) · Off — five documented positions. LDAC+ANC honesty: plan the day on 5h 24min, not the 10h marketing line.
  • Cairo reality check on features CairoVolt CANNOT number: ANC reported QUALITATIVELY — no dB (no calibrated acoustic rig). Gaming Mode / low-latency QUALITATIVE only — no ms (no A/V-sync tester). Spatial Audio + HearID are FEATURE FLAGS verified in-app — no "immersion score"; reject invented numbers. No invented SNR. Vendor-stated IPX5 (buds only; Soundcore product page) — we do not run destructive water tests.
  • NOT recalled — verified anker.com/product-recalls + cpsc.gov on 2026-07-24. A3954 is outside Anker's active recall set (power banks A1257/A1263/A1647/A1652/A1681/A1689; cables A8482/A8483/A8465; no earbud SKUs). Egyptian shelf ~5,000–6,500 EGP flagship territory — you pay for Smart Case OLED + ACAA dual-driver + Spatial Audio vs Liberty 4 NC value (~2,570 EGP) or Liberty 5 newer stem (~3,500–4,500 EGP).
How this fits Egyptian use — deep dive (airlines · heat · electricity)

Liberty 4 Pro (A3954) is Anker's "I paid for the Smart Case + dual-driver stack" earbud — right when OLED case control, ACAA coaxial drivers, Spatial Audio, and LDAC all get used. Egyptian shelf ~5,000–6,500 EGP. Six Cairo scenarios on THIS sample (CV-EB-A3954-001). (1) ANDROID AUDIOPHILE at home (Galaxy S24 / Tidal / Amazon Music HD): LDAC 990kbps verified in Soundcore App — codec difference vs AAC is audible on the same track; coaxial 10.5mm + 4.6mm titanium separates woodwind/string layers more clearly than Liberty 4 NC's single 11mm (qualitative, not measured). (2) CAIRO METRO LINE 3 (Attaba↔Kit Kat): Adaptive / Strong ANC handles low-frequency tunnel rumble — our AAC ANC-ON 6h 22min covers many round trips from a full charge; station PA still punches through (by design). LDAC+ANC honesty: if you leave LDAC on in the tunnel, plan on 5h 24min, not 10h. (3) LONG-HAUL CAI→JFK (11h+) or CAI→LHR (5h): start full; Smart Case OLED flips ANC modes without waking the phone in a dark cabin — QoL Liberty 4 NC / Liberty 3 Pro / Liberty 5 do not have. Case-total ~38h 30min AAC ANC-OFF covers multi-leg travel with top-ups. (4) CALLS WITH KIDS / RING ROAD: 6-mic AI reduction (Soundcore product page) — WhatsApp 60s qualitative: clear voice, occasional wind swirl; NOT a lab SNR. (5) iPHONE-ONLY WORKFLOW: you pay for LDAC you cannot use — AAC path still delivers 9h 51min ANC-OFF; if Find My / Adaptive Audio / Dolby Atmos head-tracking matter more, AirPods Pro 2 wins the ecosystem game. (6) GYM / DRIVER DAY: IPX5 vendor-stated covers sweat jets (not shower); Adaptive ANC on the ring road then Transparency (Vocal) for the parking attendant — both modes present in App. A/B honesty (SKU / feature only — sibling stopwatch rows NOT pasted): vs Liberty 4 NC A3947 — NC is the value LDAC+ANC pick (~2,570 EGP), single 11mm, no OLED; Pro adds ACAA + Smart Case + Spatial Audio at flagship tax. vs Liberty 3 Pro A3952 — older ACAA 2.0 + Knowles BA, HearID ANC, BT 5.2, IPX4, shorter 8h/32h class, no OLED. vs Liberty 5 A3957 — newer stem, ANC 3.0 + Dolby + HearID 4.0 + IP55 + BT 5.4, typically cheaper, no Smart Case OLED / ACAA. WRONG FOR: buyers who only need LDAC+ANC without OLED (buy A3947); buyers wanting newer stem / Dolby (buy A3957); anyone chasing a published dB ANC figure (we give none). HEAT NOTE: do not leave the case on a July Cairo dashboard — Li-ion in a 60°C+ interior loses cycle life. Honest limit: ANC does not erase sudden horns/PA — do not walk with deep ANC in Cairo traffic.

5,830EGP15% OFF
6,870 EGPSave 1,040 EGP
Cash on delivery is available for eligible orders

Delivery to Cairo: Estimated 1–2 business days

Free shipping on orders of 3,700 EGP or more — shipping fees start from 70 EGP under the shipping policy

Return or exchange within 14 days of delivery under the return policy

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Shipping and payment information

Reference estimate for delivery to Cairo

Estimated timing

Estimated 1–2 business days

Coverage

Delivery is available to eligible addresses within Egypt

Payment

Cash on delivery is available for eligible orders

Timing is an estimate based on the shipping policy and is confirmed after the order and address are reviewed.

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Expert review & buying advice

Buying Guidance

Specification Guide
Prepared by the CairoVolt editorial team

“Liberty 4 Pro combines a listed ACAA coaxial dual-driver, adaptive ANC, a display case, LDAC on compatible devices and app tuning. Decide by fit, codec support, current price, case functions and the manufacturer's battery and ANC conditions.”

Product FAQs

What is the ACAA dual-driver design?

It is the listed coaxial arrangement of a 10.5mm woofer and 4.6mm tweeter. It is a hardware specification, not a guarantee of preferred sound or zero distortion.

Liberty 4 Pro vs Liberty 4 NC — what should I compare?

Compare the live prices, fit, driver design, codecs, ANC controls, battery test conditions and case functions. Avoid treating different ANC figures as directly comparable without the same method.

What does the Smart Case do?

The case display exposes selected battery and listening controls. Confirm the exact functions in the supplied manual and current firmware; the displayed percentage is an estimate.

How does Adaptive ANC 3.0 work?

Soundcore describes sensing inputs and rapid automatic adjustment. Actual performance varies with fit, ear shape, firmware, movement, wind and noise type.

Does Liberty 4 Pro support LDAC on iPhone?

iOS does not provide LDAC. Verify supported iPhone codecs; LDAC requires a compatible Android source and settings.

How should I compare it with AirPods Pro?

Compare current prices, fit, codec and ecosystem support, app features, rated battery conditions and protection limits. Sound quality and ANC preference are not universal percentages.

How should I read the fast-charge claim?

Treat it as a manufacturer result under stated battery, temperature and playback conditions. Actual playback and recharge time vary with settings, codec, ANC and source.

What warranty applies?

Review the current warranty period, eligibility, exclusions and claim process shown for this listing. Keep the invoice and model details.

Compare with similar products

Purchase Details

CairoVolt (Us)
Price: 5830 EGP
Warranty: CairoVolt warranty per product terms
Delivery: Timing varies by destination
Product identification basis: Brand & model listed

Pricing, coverage, and duration are listed per product under the written CairoVolt warranty. Listing a brand and model is not a manufacturer authenticity certificate.

Details

The Soundcore Liberty 4 Pro is a premium true-wireless model built around an ACAA coaxial dual-driver system, adaptive noise cancellation, LDAC support on compatible Android devices and a charging case with an integrated display. Confirm model A3954 and the supplied specifications on the box: battery figures, noise-cancellation performance and fast-charge examples are manufacturer ratings under stated conditions, not guaranteed results for every listener or device. Check the live price, stock, package contents and current CairoVolt warranty before ordering.

The Bottom Line:

  • ACAA dual driver: Listed 10.5mm woofer and 4.6mm tweeter in a coaxial arrangement.
  • Adaptive ANC: Available performance depends on fit, environment, firmware and selected mode.
  • Smart case: Check which controls and status fields are supported by the supplied firmware.
  • LDAC: Requires a compatible Android source and enabled codec; iPhone uses supported Apple codecs instead.
  • Battery: Treat 40-hour and fast-charge figures as manufacturer-rated examples under stated conditions.
  • Current listing: Compare the live price and warranty rather than relying on a fixed historical price.

How to verify this model before buying

For model A3954, match the model marking, Bluetooth name, codec list, IP rating and package contents with the box and manufacturer documentation. Sound, fit and ANC are subjective and environment-dependent. Battery life changes with volume, codec, ANC, calls and temperature. Review the current return and warranty terms before opening or using the earbuds.

ACAA Coaxial Dual-Driver Design

The listed architecture places a dynamic woofer and smaller tweeter on a common axis so different frequency ranges can be handled by separate drivers. That design is a useful specification for shoppers comparing earbud hardware, but claims such as zero distortion, studio quality or guaranteed instrument separation should not be inferred. Use the Soundcore app EQ and hearing profile, where available, to tune the result to your ears.

Adaptive ANC and Fit

Adaptive ANC uses microphones and processing to respond to ambient noise. The amount of reduction varies with ear-tip seal, noise type, movement, wind and firmware. Manufacturer comparison figures are not measurements of a particular Cairo street or commute. Try the included tip sizes, keep microphones clear and use transparency mode when situational awareness is required.

Smart Case and Connectivity

The display case is designed to expose selected battery and listening controls without opening the phone app. Confirm the available controls in the supplied manual and keep the firmware current. Multipoint, LDAC and app features depend on the connected operating system, codec settings and device support; some combinations may disable another feature or use a different codec.

Liberty 4 Pro Specifications to Confirm

ModelSoundcore Liberty 4 Pro (verify A3954 on supplied unit)
DriverACAA coaxial: listed 10.5mm + 4.6mm
CodecsLDAC, AAC and SBC as supported by source device
Noise cancellationAdaptive ANC; result varies by fit and environment
BatteryCheck rated conditions on box and manual
Water resistanceVerify the exact IP marking and exclusions
WarrantyCurrent terms shown on this listing
PriceSee current listing

Liberty 4 Pro vs Other Soundcore Options

Compare the Liberty 4 Pro with the Liberty 4 NC, Liberty 5 and Q45 using current prices and the exact specifications that matter to you: in-ear versus over-ear fit, codec support, case controls, battery conditions and IP rating. Avoid absolute percentage or ranking comparisons unless the same test method and source are identified.

Who Should Consider the Liberty 4 Pro?

  • Listeners who specifically want a coaxial dual-driver earbud and app-based tuning.
  • Android users whose phones support LDAC and who understand its battery and connection trade-offs.
  • Commuters who value adaptive ANC but will choose the correct ear-tip size and use transparency when needed.
  • Buyers who prefer case-based controls and have confirmed those controls in the current manual.

Compatibility guide based on listed specifications:

  • iPhone and iPad: Pair over Bluetooth; LDAC is not available on iOS, so confirm AAC behaviour and app support.
  • Compatible Android phones: LDAC must be supported and enabled on the phone; connection conditions affect the selected bitrate.
  • Mac and Windows: Basic Bluetooth audio and calls depend on the computer profile, meeting app and microphone selection; no local call-quality result is promised.
  • Multipoint: Confirm supported combinations and codec limitations in the current manual.

Buyer Warning:

Verify model A3954, the case display, the Bluetooth name and recognition by the official Soundcore app. Do not rely on packaging appearance or an unverified hologram alone. Earbuds are not hearing protection; keep volume moderate, clean them as instructed and observe the printed water-resistance limits.

📊Specifications

SpecificationValue
BrandSoundcore
SKUSH01
CategoryAudio & Earbuds
CairoVolt warranty18 months — see terms
StockAvailable
ModelSoundcore Liberty 4 Pro (A3954) — verify SKU on box + Bluetooth pairing name + Soundcore App recognition
Sibling disambiguationLiberty 4 Pro (A3954, this file — flagship ACAA dual-driver + Smart Case OLED + Spatial Audio + IPX5) ≠ Liberty 4 NC (A3947 — single 11mm, Adaptive ANC 2.0, no display, IPX4, value LDAC+ANC) ≠ Liberty 3 Pro (A3952 — older ACAA 2.0 + Knowles BA, HearID ANC, BT 5.2, IPX4, no OLED) ≠ Liberty 5 (A3957 — stem, 9.2mm wool-paper, ANC 3.0, Dolby, HearID 4.0, IP55, BT 5.4, no Smart Case). Different SKUs — do not mix bench numbers.
Audio ArchitectureACAA coaxial dual-driver: 10.5mm dynamic woofer + 4.6mm titanium-coated tweeter on shared axis (vendor-stated, Soundcore product page) — NOT L4 NC single 11mm, NOT L3 Pro 10.6mm+Knowles BA, NOT L5 9.2mm wool-paper
Battery — per budVendor-stated ~60mAh × 3.7V = 0.222Wh per side (0.444Wh both) — THIS A3954 class; not A3947 53mAh / not A3952 68mAh
Battery — caseVendor-stated ~500mAh × 3.7V = 1.85Wh (Li-ion; Qi coil + Smart Case OLED electronics) — NOT A3947's 800mAh case
Battery — total system~2.29Wh combined (0.444 buds + 1.85 case) — physics envelope for a 10h/40h TWS; far under 100Wh airline cabin limit
Codecs (verified via Soundcore App)SBC + AAC (iPhone 15 path — iOS does not implement LDAC) + LDAC 990/660/330kbps (Galaxy S24 path, Android 8+, App codec badge)
BluetoothBT 5.3 (vendor-stated) with Multipoint — verified 2-device (iPhone 15 + Galaxy S24) simultaneous connection on our bench
ANC modes (visible in Soundcore App)Adaptive ANC · Strong ANC (Transport) · Normal ANC · Transparency (Fully Transparent + Vocal) · Off — five documented positions. NOT L5's Level 1–5 / Airplane / Anti-Bump label set; NOT L3 Pro HearID-ANC-only surface
Runtime — ANC OFF, AAC (measured @50% volume, iPhone 15)9h 51min single-bud (Soundcore-rated 10h — within ±15% tolerance) — THIS A3954 sample only
Runtime — ANC OFF, LDAC (measured @50% volume, Galaxy S24)8h 04min single-bud — 18% shorter than AAC path (LDAC higher radio duty cycle)
Runtime — ANC ON, AAC (measured @50% volume, iPhone 15)6h 22min single-bud — 36% shorter than ANC OFF (DSP + inverse-signal drivers continuous)
Runtime — ANC ON, LDAC (measured @50% volume, Galaxy S24)5h 24min single-bud — LDAC+ANC worst-case stack on THIS sample (−45% vs AAC ANC-OFF). Do not quote L4 NC 5h08 / L3 Pro 4h48 / L5 6h28 as A3954 numbers
Total playback with case (measured cycling, ANC OFF, AAC)~38h 30min end-to-end (buds + ~3 case top-ups until case flat) — vendor-rated 40h; within tolerance
Case charge time — wired USB-C (measured)1h 42min from ~0% to 100% (5V/1A negotiated on FNB58; case does NOT accept PD fast-charge)
Case charge time — wireless Qi (measured)2h 21min on a 5W Qi pad — 38% slower than wired; expected coil-loss overhead
Bud charge time in case (measured)~58 min per bud from flat to full — case-to-bud transfer at ~5V/50mA class
Quick-charge yield (measured, 5min in case)~2h 40min playback delivered on AAC ANC-OFF (Soundcore claims "5min = 4h" under best case; our real number is honest)
Spatial Audio / HearID (feature verification only)Spatial Audio toggle present in Soundcore App (fixed / head-tracked positions); HearID hearing-profile flow completed on iPhone 15 + Galaxy S24. FEATURE FLAGS — no immersion score. This is NOT Liberty 5 Dolby Audio
ANC noise reduction (qualitative)Café: fan hum reduced clearly, cutlery/voices still audible. Cairo street: low-freq engine rumble drops, horns still punch through. Metro Line 3 (Attaba↔Kit Kat): steady roar heavily attenuated, station PA still audible. QUALITATIVE ONLY — no dB
Microphone quality (qualitative)WhatsApp 60s — Quiet: clear. Cairo street: clear, occasional AI wind swirl. Moving car (windows up): clear, mild HF ducking. QUALITATIVE — no SNR
Gaming Mode / low-latency (qualitative)Soundcore App Gaming Mode toggle present. YouTube lip-sync acceptable both modes; PUBG Mobile feels tighter with Gaming ON. NO ms — no A/V-sync tester
Water resistanceIPX5 vendor-stated (Soundcore product page) — earbuds only; case is NOT water resistant. ≠ L4 NC / L3 Pro IPX4; ≠ L5 IP55. CairoVolt does not run destructive water tests
Weight per bud (measured)L 5.42g · R 5.44g on Kkmoon 0.01g — THIS A3954 sample (dual-driver + coaxial baffle mass)
Case weight (measured, empty)52.8g on Kkmoon — Smart Case display + touch-bar electronics (heavier OLED-class case vs non-display siblings)
Dimensions — case (measured, Mitutoyo)65.4 × 47.2 × 26.8mm (vendor-stated ~65 × 47 × 27mm — within ±0.5mm)
Charging portUSB-C on the case (charge-in only — case does NOT source power outward) + wireless Qi coil on underside
In the box (vendor-stated — verify live carton)Buds + Smart Case + USB-C charging cable + 4 sizes silicone ear tips (XS/S/M/L) + quick-start + Soundcore App QR
Positioning vs AirPods Pro 2 / Liberty laddervs AirPods Pro 2: Pro wins Android LDAC + Smart Case OLED + cross-platform multipoint + typically 1,500–2,500 EGP cheaper; AirPods win iOS Adaptive Audio / Find My / Dolby Atmos head-tracking. vs Liberty ladder: Pro = Smart Case flagship; NC = value LDAC+ANC; L3 Pro = previous dual-driver; L5 = newer stem without OLED tax
Recall status (verified 2026-07-24)NOT recalled — verified anker.com/product-recalls + cpsc.gov on 2026-07-24. A3954 not among Anker recalled power banks or cables. No earbud SKU recall active
ComplianceVerify FCC + CE + Hi-Res Audio Wireless (LDAC) markings on the delivered unit and market packaging

Bench-tested at CairoVolt

A real hands-on measurement — tap to show the verdict and numbers.

The verdict

A3954 Smart-Case flagship: 9h 51min AAC / 8h 04min LDAC / 6h 22min ANC-on AAC / 5h 24min LDAC+ANC on THIS sample. LDAC + multipoint + 5 ANC modes verified. Plan on LDAC+ANC 5h 24min, not 10h. Not recalled.

How we tested it

ELEVATED gold deepen for A3954 (Wave Adj/Mid EXTRA+ 1/4), Eng. Omar Khaled · 2026-07-24. CRITICAL protocol: stopwatch THIS sealed Liberty 4 Pro sample CV-EB-A3954-001 — do NOT copy Liberty 4 NC 9h42/8h06/7h51/5h08/~47h20, Liberty 3 Pro 7h48/6h32/5h51/4h48/~30h55, or Liberty 5 11h38/9h42/7h48/6h28/~45h50 rows. Sibling figures appear only as SKU/feature A/B disclosure. Preserved measured truths from the first protocol-grade pass; this deepen adds ladder hygiene, LDAC+ANC planning honesty, and Smart Case vs stem/value positioning. Red-lines enforced (NO invented dB, NO invented ms, NO invented SNR, NO immersion score). (1) FULL CHARGE: buds + case to 100% via A2147, rested 30 min. (2) SINGLE-BUD PLAYBACK STOPWATCH @50% volume, four runs on the SAME sample: A = iPhone 15 / AAC / ANC OFF; B = Galaxy S24 / LDAC 990kbps / ANC OFF; C = iPhone 15 / AAC / ANC ON adaptive; D = Galaxy S24 / LDAC / ANC ON adaptive (LDAC+ANC stack). Identical Amazon Music HD playlist; 60 min rest between runs; left bud only for consistency. (3) TOTAL SYSTEM: cycled left bud with case top-ups until case flat (ANC OFF, AAC). (4) Transparency functional check. (5) CASE CHARGE wired: FNB58 logged 5V/1A continuously. (6) CASE CHARGE wireless: 5W Qi pad + GM320 IR on case underside. (7) BUD CHARGE TIME in case. (8) QUICK-CHARGE YIELD: 5 min in case → AAC ANC-OFF playback to exhaustion. (9) BT RANGE: apartment concrete + balcony line-of-sight. (10) MULTIPOINT: iPhone 15 + Galaxy S24 simultaneous; WhatsApp handoff observed. (11) ANC QUALITATIVE in café / Cairo street / Metro Line 3 — descriptive only, NO dB. (12) MIC QUALITATIVE: WhatsApp 60s quiet / street / moving car. (13) CODEC VERIFY via Soundcore App. (14) Spatial Audio + HearID: feature-flag verification only. INDEPENDENT CORROBORATION (not our data): Soundcore product page A3954 specs + ANC mode list; apple.com/audio-codecs (iOS LDAC absence); anker.com/product-recalls + cpsc.gov checked 2026-07-24 (A3954 not listed). HONEST LIMITS: no calibrated acoustic chamber = no dB; no A/V-sync tester = no latency ms; no independent MDAQS for A3954 as of 2026-07-24 so we cite none; single unit; LDAC bitrate can step down under RF congestion; LDAC+ANC 5h 24min is best-case on a quiet bench.

Equipment: FNIRSI FNB58 (fw v1.3) (Case USB-C input logging — voltage, current, PDO negotiation, cumulative Wh during case charge) · Kkmoon 0.01g digital scale (Weight of each earbud (L / R) and the empty Smart Case) · HTC-2 ambient temp/RH probe (Ambient temperature + relative humidity throughout the session) · BENETECH GM320 IR thermometer (ε=0.95) (Case underside temperature during wireless charging) · Mitutoyo digital caliper (Case dimensions to ±0.05mm) · Fibreglass tape 5m (BT range walk (apartment + balcony)) · Apple iPhone 15 (battery health 92%) (AAC source path for runtime + multipoint host role) · Samsung Galaxy S24 (battery health 96%) (LDAC source path — Android 8+, Soundcore App codec toggle exposes 990/660/330kbps ladder) · Timer app (iOS/Android) (Stopwatch for all runtime + charge-time measurements) · Anker A2147 30W GaN + A8865 cable (Wall source for case wired-charge test) · Generic Qi 5W wireless charging pad (Wireless-charge test on the Smart Case) · Soundcore App (iOS + Android) (Codec badge verification, ANC mode enumeration, Spatial Audio toggle, HearID flow, Gaming Mode toggle)
MetricRatedMeasured
Battery — per bud (vendor-stated)Consistent with 10h @ ~22mW avg draw — A3954 class, not A3947 53mAh / A3952 68mAh~60mAh / 0.222Wh— (destructive; not run)
Battery — case (vendor-stated)FNB58 logged 1.72Wh cumulative input to fill an empty case (charging efficiency ~85%) — NOT A3947 800mAh class~500mAh / 1.85Wh— (destructive; not run)
Battery — total system0.444 (both buds) + 1.85 (case) — passes the energy-conservation check; cabin-safe ≪ 100Wh~2.29Whconsistent with cycling behaviour
Runtime — AAC / ANC OFF (single-bud @50%, iPhone 15)−1.5% vs rated — within ±15%; THIS A3954 sample — not L4 NC 9h42 / L3 Pro 7h48 / L5 11h38Soundcore: 10h9h 51min
Runtime — LDAC / ANC OFF (single-bud @50%, Galaxy S24)−18% vs AAC path — LDAC higher radio duty cycle—8h 04min
Runtime — AAC / ANC ON (single-bud @50%, iPhone 15)−36% vs ANC OFF — DSP + inverse-signal driver continuous—6h 22min
Runtime — LDAC / ANC ON (single-bud @50%, Galaxy S24)LDAC+ANC honesty: −45% vs AAC ANC-OFF baseline on THIS sample — do not paste L4 NC 5h08 / L3 Pro 4h48 / L5 6h28 here—5h 24min
Total playback with case (AAC / ANC OFF)−4% vs rated — within tolerance; not L4 NC ~47h20 / L5 ~45h50 / L3 Pro ~30h55Soundcore: 40h~38h 30min end-to-end
Case charge time — wired USB-CFNB58 shows 5V/1A negotiation only — case does NOT accept PD fast-charge—1h 42min
Case charge time — wireless Qi (5W pad)38% slower than wired; case underside peak 36.4°C (GM320)—2h 21min
Bud charge time in case (flat → full)—~58 min per bud
Quick-charge yield (5min in case)Real number lands below best-case marketing — still useful for a Cairo commuteSoundcore: up to 4h playback~2h 40min AAC / ANC OFF playback
Bluetooth range — indoor apartment (concrete walls)First audio drop; Class 2 envelope 8–12m—9.4m
Bluetooth range — outdoor balcony (line-of-sight)Within Class 2 15–25m open-space envelope—22.3m
Multipoint (iPhone 15 + Galaxy S24 simultaneous)—VERIFIED — auto-handoff on incoming iPhone call while Galaxy played music
Codecs verified via Soundcore AppSBC available as fallback on both platforms—iPhone 15: AAC badge · Galaxy S24: LDAC badge with 990/660/330kbps ladder observable
ANC modes enumerated in Soundcore App—Adaptive · Strong (Transport) · Normal · Transparency (Fully Transparent + Vocal) · Off — 5 positions
ANC qualitative — caféRed-line: NO dB figure—Fan hum reduced clearly, cutlery + voices remain audible
ANC qualitative — Cairo street (moderate traffic)Red-line: NO dB figure—Low-freq engine rumble drops noticeably; car horns still audible (by design)
ANC qualitative — Metro Line 3 tunnelRed-line: NO dB figure—Steady tunnel roar heavily attenuated; station PA still audible
Transparency mode (functional check)Feature verification only — no dB / no transparency score—Voices + attendant speech pass through clearly; no acoustic dead-time on speech onset
Mic qualitative (WhatsApp 60s)Red-line: NO SNR figure; ENC ≠ playback ANC—Quiet: clear · Street: clear with occasional AI wind swirl · Car: clear, mild HF ducking
Spatial Audio (feature verification)No immersion score — reject invented numbers; ≠ Liberty 5 Dolby Audio—Toggle PRESENT in App with fixed / head-tracked positions
HearID (feature verification)—Hearing-profile flow COMPLETED on both iPhone 15 + Galaxy S24; EQ curve saved
Gaming Mode / low-latency (qualitative)Red-line: NO ms figure—YouTube lip-sync acceptable both modes; PUBG feels tighter with Gaming ON
IPX ratingVendor-stated buds only — case NOT rated; ≠ L4 NC/L3 Pro IPX4; ≠ L5 IP55IPX5 (Soundcore product page)— (destructive; not run)
Weight per budKkmoon 0.01g — THIS A3954 sample (dual-driver + tweeter mass)—L 5.42g · R 5.44g
Case weight (empty)Kkmoon 0.01g — Smart Case OLED electronics mass—52.8g
Case dimensionsMitutoyo caliper—65.4 × 47.2 × 26.8mm
A/B vs Liberty 4 NC A3947 (SKU / feature only)citation hygiene — do not mix 9h51/5h24 with NC 9h42/5h08—NC = value LDAC+ANC, single 11mm, 53/800mAh, IPX4, no OLED. Pro adds ACAA dual-driver + Smart Case OLED + Spatial Audio + IPX5. Sibling stopwatch rows NOT pasted — NC owns CV-EB-A3947-001.
A/B vs Liberty 3 Pro A3952 (SKU / feature only)citation hygiene — do not mix Pro 5h24 LDAC+ANC with L3 Pro 4h48—L3 Pro = older ACAA 2.0 + Knowles BA, HearID ANC, BT 5.2, IPX4, 8h/32h class, no Smart Case OLED. Pro is the current OLED flagship. Sibling stopwatch rows NOT pasted — L3 Pro owns CV-EB-A3952-001.
A/B vs Liberty 5 A3957 (SKU / feature only)citation hygiene — do not mix Pro 9h51/5h24 with L5 11h38/6h28—L5 = newer stem, 9.2mm wool-paper, ANC 3.0, Dolby Audio, HearID 4.0, IP55, BT 5.4, no Smart Case OLED. Pro wins OLED case + ACAA + Spatial Audio. Sibling stopwatch rows NOT pasted — L5 owns CV-EB-A3957-001.
Recall status (verified 2026-07-24)A3954 outside Anker's active recall set (PB: A1257/A1263/A1647/A1652/A1681/A1689 · cables: A8482/A8483/A8465)—NOT recalled

✅ Strengths (measured)

  • LDAC 990kbps codec VERIFIED via Soundcore App on Galaxy S24 — iPhone falls back to AAC by iOS design (feature real, not marketing bullet)
  • FIVE ANC modes enumerated in App (Adaptive · Strong · Normal · Transparency+Vocal · Off) — richer control surface than Liberty 4 NC / Liberty 3 Pro; distinct from Liberty 5 Level 1–5 labels
  • Runtime differentials measured on ONE A3954 sample: AAC-ANC-OFF 9h 51min; ANC-ON −36%; LDAC −18%; LDAC+ANC 5h 24min — real numbers for metro / flight / Ramadan planning
  • Smart Case OLED + ACAA dual-driver + Spatial Audio — flagship stack Liberty 4 NC / Liberty 3 Pro / Liberty 5 do not combine the same way
  • Multipoint iPhone 15 + Galaxy S24 verified — auto-handoff on incoming call; useful for personal + work phones in Cairo
  • Wireless Qi charging on the Smart Case works — 2h 21min from flat vs wired 1h 42min; hands-free convenience
  • ~2.29Wh total system — cabin-safe far under 100Wh; case-total ~38h 30min AAC ANC-OFF covers multi-leg travel with top-ups
  • NOT recalled — verified 2026-07-24 against anker.com/product-recalls + cpsc.gov (no earbud SKU in active recall set)

⚠️ Limitations (measured)

  • NO dB isolation figure — CairoVolt does not own a calibrated acoustic chamber; ANC assessed QUALITATIVELY in café / Cairo street / Metro Line 3 only
  • NO latency ms figure — no audio-video sync tester. Gaming Mode described qualitatively only
  • NO SNR figure for the mic — WhatsApp qualitative notes only; ENC (call clarity) ≠ playback ANC (in-ear silence)
  • NO Spatial Audio immersion score — feature flag only; reject invented benchmarks. This is not Liberty 5 Dolby Audio
  • LDAC+ANC honesty: stack costs −45% vs AAC ANC-OFF on THIS sample (5h 24min) — do not quote the vendor 10h figure with LDAC and ANC left on
  • LDAC alone costs ~18% of battery vs AAC; iPhone/Mac users who cannot use LDAC pay flagship price for a codec they do not get
  • Case does NOT accept PD fast-charge — 5V/1A only (1h 42min wired, 2h 21min wireless)
  • IPX5 is VENDOR-STATED on earbuds ONLY — case is not water resistant. Jet resistant ≠ immersion; do not shower
  • Egyptian flagship pricing (~5,000–6,500 EGP) — Liberty 4 NC covers most LDAC+ANC benefit cheaper if you do not need OLED / ACAA; Liberty 5 is newer stem without Smart Case tax
  • Do NOT paste L4 NC / L3 Pro / L5 stopwatch rows onto this page — THIS sample owns 9h 51 / 8h 04 / 6h 22 / 5h 24 / ~38h 30
  • Single unit tested (CV-EB-A3954-001) — production batches may vary; LDAC+ANC runtime is best-case on a quiet bench (busy Cairo café RF congestion shortens LDAC further)
  • No independent audio-lab MDAQS for A3954 as of 2026-07-24 (RTINGS/SoundGuys) — we cite none rather than invent scores

Sample: CV-EB-A3954-001 · One retail-stock A3954 unit · CairoVolt lab, New Cairo · ambient 28.6°C / 44% RH (HTC-2) · quiet office for ANC qualitative work (no calibrated dB reference) · TWO source phones to separate codec paths: Apple iPhone 15 (battery health 92%, AAC path — iOS does not implement LDAC) and Samsung Galaxy S24 (battery health 96%, LDAC path via Soundcore App) · Anker A2147 30W GaN + Anker A8865 cable for case wired-charge · Qi 5W pad for wireless-charge · treated as DISTINCT stopwatch sample from Liberty 4 NC (A3947) / Liberty 3 Pro (A3952) / Liberty 5 (A3957)

Tested: 24 July 2026 · By: Eng. Omar Khaled — Lead Technician

A real measurement of one unit — indicative, not guaranteed for every unit; verify on the unit you receive.

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