Audio Fix / setup help

Sony WH-1000XM4: check why LDAC is unavailable

Check the documented two-device limitation before changing source codec settings.

Manufacturer-documented Reviewed 2026-11-09 · Revision 1

Follow these checks in Audio Fix →

When this guide applies

Exact WH-1000XM4 music over Bluetooth. The WH-1000XM4 restriction is not generalized to WH-1000XM5. Source LDAC support must be documented; an omitted source specification is unknown.

Connection scope: Bluetooth. Symptom: An option or codec is missing.

This is a documented check, not a diagnosis of your equipment. The model name does not confirm the selected input, mode, software or connected partner.

If your exact model or a required setting is unknown, use the “I don’t know” branch below. Do not apply a similarly named model’s instructions.

What owners have reported

These are public, self-reported experiences. They help explain the order of checks and the limits of a guide. They are not controlled tests, proof of a cause, a success rate or a substitute for the manufacturer instructions above.

User-reported WH-1000XM4 LDAC became available after changing two-device mode

The post describes AAC playback despite expecting LDAC; the author later reports LDAC appearing after multipoint was disabled.

How this informs the checks: Provides a practical example alongside the separately documented WH-1000XM4 limitation, without turning the report into a physical Audio Review test.

Limits: Anecdotal follow-up without a full reproducible version record or measurement.

Read the original public discussion ↗ · Reviewed 2026-11-09

Checks and possible outcomes

Start at source. Follow the link that matches what you actually observe. Alternative branches are not a single sequence of actions.

source

Does the exact source document LDAC support?

Look up the exact source and OS. Missing information means I don’t know, not unsupported.

Look for: Choose the observation you can confirm.

  • Manufacturer-documented WH-1000XM4: Supported codecs ↗Supported music codecs and source settings — WH-1000XM4 music codecs include SBC, AAC and LDAC. The source must transmit a supported codec and may need its own settings.WH-1000XM4 A2DP music; capability does not establish the active codec. · Source checked 2026-11-09

two

Is two-device operation enabled?

Read the Connect to 2 devices simultaneously setting in the Sony app.

Look for: Choose the observation you can confirm.

choice

Do you want LDAC rather than two-device mode?

WH-1000XM4 cannot provide both together. Keeping two-device mode is a valid choice.

Look for: Choose the observation you can confirm.

disable

Disable two-device operation

Turn off Connect to 2 devices simultaneously in the app.

Look for: The two-device control is off.

quality

Select sound-quality priority

Choose Priority on sound quality in the Sony app.

Look for: The quality setting is selected.

  • Manufacturer-documented WH-1000XM4: About the sound quality mode ↗Priority on sound quality — The app allows sound-quality priority to be selected.Exact WH-1000XM4. No new firmware threshold is asserted. · Source checked 2026-11-09

codec

Does the source now confirm LDAC?

Check the active codec using the source’s documented indicator during playback. Model support alone does not prove activation.

Look for: Choose the observation you can confirm.

  • Manufacturer-documented WH-1000XM4: Supported codecs ↗Supported music codecs and source settings — WH-1000XM4 music codecs include SBC, AAC and LDAC. The source must transmit a supported codec and may need its own settings.WH-1000XM4 A2DP music; capability does not establish the active codec. · Source checked 2026-11-09

Possible result

The source must also transmit LDAC

The headset cannot add LDAC to an unsupported source.

Look for: Report your own outcome separately. Reaching this screen does not mean the issue is solved.

documented limitation

Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

  • Manufacturer-documented WH-1000XM4: Supported codecs ↗Supported music codecs and source settings — WH-1000XM4 music codecs include SBC, AAC and LDAC. The source must transmit a supported codec and may need its own settings.WH-1000XM4 A2DP music; capability does not establish the active codec. · Source checked 2026-11-09

Possible result

WH-1000XM4 two-device mode excludes LDAC

Sony documents AAC or SBC while this model’s two-device setting is enabled. This is a mode limitation, not a fault diagnosis.

Look for: Report your own outcome separately. Reaching this screen does not mean the issue is solved.

documented limitation

Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

Possible result

Checks completed

You reached the end of these checks. Your reported result still needs to be recorded; no automatic success or cause is inferred.

Look for: Report your own outcome separately. Reaching this screen does not mean the issue is solved.

steps completed

Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

    Possible result

    A required observation is missing

    Check the exact model, OS/app version and the linked official instructions. A missing or different screen is not a negative capability result. Stop this path until that observation is known.

    Look for: Report your own outcome separately. Reaching this screen does not mean the issue is solved.

    insufficient data

    Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

      Possible result

      The next step needs official support

      These checks did not establish a working setup. Use the linked Sony instructions or support with your exact model, source and versions. No hardware or driver fault has been diagnosed. Factory initialization is outside this flow; it removes stored pairing information.

      Look for: Report your own outcome separately. Reaching this screen does not mean the issue is solved.

      next support

      Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

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