Audio Fix / setup help

TOZO NC9 Pro: check the playback source before looking for LDAC

The earbuds supporting LDAC is only one prerequisite. Check the source and OS before changing settings.

Manufacturer-documented Reviewed 2026-11-08 · Revision 1

Follow these checks in Audio Fix →

When this guide applies

TOZO NC9 Pro with the touchscreen case, not older NC9 variants. This is a prerequisite check, not a verified app-menu activation recipe. The official article gives no supported source-model or OS-version list.

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.

Checks and possible outcomes

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

support-check

Does the source documentation confirm LDAC?

Look up the exact phone/computer model and its OS. Check the manufacturer’s Bluetooth/audio documentation for LDAC. Missing information means I don’t know, not unsupported.

Look for: Choose the answer that matches what you can confirm.

  • Manufacturer-documented How to Make the Most of TOZO NC9 Pro Noise Cancelling Earbuds ↗FAQ: Does LDAC work with every smartphone? — LDAC needs support from the source device and its operating system; the NC9 Pro feature list alone is insufficient.TOZO NC9 Pro with the touchscreen case, as described by TOZO in this article; not older NC9 models. The article does not identify supported phone models, OS versions, app menus or a firmware minimum. · Source checked 2026-11-08

active

Can you see an active-codec indication?

If your source has a documented codec indicator, check it during playback. Do not assume LDAC is active from the NC9 Pro feature list.

Look for: Choose the answer that matches what you can confirm.

  • Manufacturer-documented How to Make the Most of TOZO NC9 Pro Noise Cancelling Earbuds ↗FAQ: Does LDAC work with every smartphone? — LDAC needs support from the source device and its operating system; the NC9 Pro feature list alone is insufficient.TOZO NC9 Pro with the touchscreen case, as described by TOZO in this article; not older NC9 models. The article does not identify supported phone models, OS versions, app menus or a firmware minimum. · Source checked 2026-11-08

Possible result

The source must also support LDAC

The NC9 Pro cannot add LDAC support to a source or OS that lacks it. Keep normal playback separate from the unavailable codec option.

Look for: This is the outcome of the checks, not a claim that your problem has been solved.

documented limitation

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

  • Manufacturer-documented How to Make the Most of TOZO NC9 Pro Noise Cancelling Earbuds ↗FAQ: Does LDAC work with every smartphone? — LDAC needs support from the source device and its operating system; the NC9 Pro feature list alone is insufficient.TOZO NC9 Pro with the touchscreen case, as described by TOZO in this article; not older NC9 models. The article does not identify supported phone models, OS versions, app menus or a firmware minimum. · Source checked 2026-11-08

Possible result

A required observation is missing

Do not guess the setting or support. Open the linked documentation and check the exact source model and the relevant screen. If the control differs, record the app/OS/firmware version for the manufacturer; this guide cannot confirm a version-specific path.

Look for: This is the outcome of the checks, not a claim that your problem has been solved.

insufficient data

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

    Possible result

    Continue with the manufacturer

    These checks did not establish a working setup. Use the linked official documentation or manufacturer support with your exact models and app/OS/firmware versions. No cause or hardware fault has been diagnosed.

    Look for: This is the outcome of the checks, not a claim that your problem has been solved.

    next support

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

      Possible result

      Checks completed — tell us what happened

      You reached the end of this documented procedure. Your own outcome still needs to be reported; completion alone does not mean the original problem is solved.

      Look for: This is the outcome of the checks, not a claim that your problem has been solved.

      steps completed

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

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