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The evidence library

Look into the details.

Huawei

HUAWEI FreeBuds Pro 4

A true-wireless model with Bluetooth 5.2, dual-device connection, and a maker-listed sound-quality mode using L2HC/LDAC or a connection-priority AAC mode.

Bluetooth
BT 5.2.
Codecs
Huawei lists L2HC/LDAC when prioritizing sound quality and AAC when prioritizing connection quality.
Multipoint
Simultaneous Bluetooth connection with two devices is listed.
Battery claim
Huawei lab figures: up to 6.5h earbuds / 31h with case for L2HC/LDAC with ANC off; up to 4.5h / 22h with ANC on. AAC connection-priority figures are also listed.
Market source
Official Huawei UK specification.

Consider the tradeoffs

  • Codec selection may depend on the source phone and settings; the product codec list alone does not show what a given setup will negotiate.
  • Battery figures are Huawei lab results with a named phone and 50% volume; real use varies.

Questions worth testing

  • What phone model and OS will be the Bluetooth source?
  • Does that phone support the desired Huawei codec?
  • Is ANC-off or ANC-on battery more relevant?

Scope & unknowns

  • No codec negotiation, sound, call, ANC, or battery test was performed.
  • Codec presence does not establish that a streaming service supplies lossless audio or that a listener will hear a difference.
  • The maker’s stated test conditions should not be generalized.

Check the sources

Xiaomi

Xiaomi Buds 5 Pro (Bluetooth model)

The standard Bluetooth variant is associated with a broad codec list in Xiaomi’s official family FAQ; Xiaomi also sells a Wi-Fi variant, so the exact hardware version must be confirmed.

Model
Official Japan product specification identifies standard Bluetooth model M2437E1; Xiaomi’s FAQ describes Buds 5 Pro family connection support.
Bluetooth
BT 5.4 and open-area 10m range are listed in the reviewed Xiaomi FAQ.
Protocols
LE, HFP, A2DP, and AVRCP are listed.
Codecs
SBC, AAC, aptX Lossless, aptX Adaptive, and LC3 are listed in the family FAQ.
Variant caveat
The family includes a Wi-Fi version with a different model identifier; verify the exact standard Bluetooth package and source-device support.
Market source
Official Xiaomi Japan specifications and official Xiaomi Malaysia FAQ.

Consider the tradeoffs

  • A family FAQ codec list does not prove that every codec applies to every regional or hardware variant.
  • A capable earbud still needs compatible source hardware, OS, and settings for a codec to be negotiated.
  • The open-area range is a maker specification, not an indoor connection guarantee.

Questions worth testing

  • Is the item the standard Bluetooth model M2437E1 or the Wi-Fi variant?
  • Which codecs does the exact phone support?
  • Do you need multipoint, low-latency, or high-resolution modes?

Scope & unknowns

  • No source-device negotiation, audio, range, or battery test was performed.
  • Codec details are drawn from an official family FAQ and should be confirmed against the exact regional SKU.
  • Codec support does not establish audible superiority.

Check the sources

OnePlus

OnePlus Buds Pro 3

A true-wireless model with Bluetooth 5.4 and LHDC 5.0/AAC/SBC codec listings; OnePlus publishes separate battery estimates for codec and ANC combinations.

Bluetooth
BT 5.4.
Codecs
LHDC 5.0, AAC, and SBC are listed.
Battery claim
Maker lab estimates include up to 10h earbuds / 43h with case for AAC and ANC off; up to 6h / 25.5h for AAC with ANC on; and up to 5h / 21.5h for LHDC with ANC on.
Latency claim
94ms low-latency figure is listed by the manufacturer.
Market source
Official OnePlus Singapore specification page.

Consider the tradeoffs

  • Battery figures vary materially with codec and ANC settings.
  • The codec list does not confirm that the connected phone offers LHDC 5.0.
  • The low-latency number is a manufacturer listing, not a measured end-to-end test.

Questions worth testing

  • What source phone and codec support will be used?
  • Is active noise cancellation typically on?
  • Is stated low latency relevant to gaming or video?

Scope & unknowns

  • No listening, codec, call, latency, or battery test was conducted.
  • Maker lab figures are conditional estimates, not guaranteed everyday runtime.
  • No claim is made about sound quality superiority.

Check the sources

OPPO

OPPO Enco X3i (E509A)

A true-wireless model with Bluetooth 5.3 and LHDC 5.0/AAC/SBC codec listings; OPPO publishes ANC-on runtime figures for AAC and LHDC modes.

Model
E509A.
Bluetooth
BT 5.3; manufacturer lists a 10m range.
Codecs
LHDC 5.0, AAC, SBC.
Battery claim
Manufacturer lists up to 6.5h earbuds / 28h with case for AAC and ANC on, and 5.5h / 24h for LHDC and ANC on.
Water rating
Earbuds rated IP55 in the reviewed specification.
Market source
Official OPPO global product specification.

Consider the tradeoffs

  • The page’s codec and runtime figures do not establish that a paired phone supports LHDC or reproduces the manufacturer test conditions.
  • The IP55 rating is listed for earbuds; do not transfer it to the case.

Questions worth testing

  • Does your source phone support LHDC 5.0?
  • Will ANC be on for most listening?
  • Is an earbuds-only IP rating sufficient for the intended use?

Scope & unknowns

  • No audio, ANC, water-resistance, codec, or battery test was performed.
  • The battery figures are manufacturer estimates under stated codec/ANC conditions.
  • No sound-quality ranking is made.

Check the sources

soundcore

soundcore Liberty 5 (A3957)

A Bluetooth 5.4 true-wireless model with LDAC/AAC/SBC listed by the maker, multipoint, and battery estimates that differ with ANC use.

Model
A3957.
Bluetooth
BT 5.4.
Codecs
Official soundcore support page lists SBC, AAC, and LDAC.
Multipoint
Multipoint is listed on the product page.
Battery claim
Manufacturer lists up to 12h earbuds / 48h with case with ANC off and 8h / 32h with ANC on.
Water rating
IP55 is listed for earbuds.
Market source
Official soundcore product and support pages.

Consider the tradeoffs

  • LDAC use requires a compatible source and may interact with other listening settings; check current app guidance.
  • The battery estimate is not a personal runtime guarantee.
  • The IP55 statement applies to earbuds, not necessarily the charging case.

Questions worth testing

  • Does the source phone support LDAC?
  • Do you need two-device multipoint?
  • Which ANC setting and listening duration matter most?

Scope & unknowns

  • No codec negotiation, fit, ANC, audio, water-resistance, or runtime test was performed.
  • Codec support alone does not indicate audible quality or streaming-source quality.
  • Battery figures are manufacturer claims.

Check the sources

Edifier

Edifier STAX SPIRIT S3

An over-ear planar-magnetic headphone with Bluetooth 5.2, aptX Adaptive/aptX HD/aptX/SBC listings, and a wired AUX option; Snapdragon Sound requires a compatible device.

Bluetooth
Bluetooth 5.2.
Codecs
aptX Adaptive, aptX HD, aptX, and SBC.
Wired option
Included 3.5mm cable and adapter are listed.
Weight g
329
Battery claim
Edifier lists around 80 hours of playtime.
Compatibility
Manufacturer states Snapdragon Sound performance requires compatible devices.
Market source
Official Edifier United States product page.

Consider the tradeoffs

  • An over-ear 329g design differs in carry and fit from true-wireless earbuds.
  • Codec and Snapdragon Sound behavior depends on the source device.
  • Edifier US page displayed out of stock during the check; that is a dated listing state.

Questions worth testing

  • Do you prefer over-ear headphones or pocket earbuds?
  • Does the source support aptX Adaptive or the desired Snapdragon Sound feature?
  • Will wired AUX fallback be useful?

Scope & unknowns

  • No comfort, sound, codec, battery, or wired-output test was performed.
  • The 80-hour figure is a manufacturer claim.
  • Availability changes; the dated US listing is not a purchase recommendation.

Check the sources

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