Audio Fix / setup help

FiiO R9: Find the Bluetooth transmission quality selector

FiiO R9 — Find the Bluetooth transmission quality selector. Follow the exact documented route and keep the actual result.

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

Follow these checks in Audio Fix →

When this guide applies

Exact FiiO R9. Transmission only; partner must document the same desired codec. This is not a claim that every listed codec is always negotiated. Only normal external user controls; no mains modification, chassis opening, reset or firmware installation.

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 User-reported R9 LHDC interoperability difference

An owner using R9 with iFi GO pod Max reported silence after selecting LHDC while LDAC worked in that setup. The available thread does not establish the technical cause or a universal fix.

How this informs the checks: Keeps the codec-selection check conditional on the actual observed result rather than promising success from a specification list.

Limits: One reported receiver combination; a codec listed by both products does not prove successful negotiation in every configuration. No manufacturer-verified cure was visible.

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

Checks and possible outcomes

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

scope

Confirm the exact setup

Is R9 in a supported transmitting mode with a connected receiver whose official specifications confirm the desired codec?

Look for: Choose only a detail you can confirm.

  • Manufacturer-documented FiiO R9 FAQ: Bluetooth transmitter ↗Instructions 1–3 — Settings > Bluetooth enables transmission; a receiver in its own pairing mode is selected from Pair new device. Wireless playback quality chooses among supported transmission codecs.Exact FiiO R9, not R7. Installed settings must match the documented labels. · Source checked 2026-11-09
  • Manufacturer-documented FiiO R9 FAQ: Operating modes and supported outputs ↗Output lists by mode — Bluetooth and USB audio output work in Android/Pure Music/AirPlay/Roon modes, but not Bluetooth Receiving, USB DAC or optical/coaxial decoding modes. HDMI modes also exclude optical/coaxial outputs.Exact FiiO R9, not R7. Installed settings must match the documented labels. · Source checked 2026-11-09

a1

Open Wireless playback quality

Open Settings > Audio > Wireless playback quality on R9.

Look for: Perform this one check and observe the actual response.

  • Manufacturer-documented FiiO R9 FAQ: Bluetooth transmitter ↗Instructions 1–3 — Settings > Bluetooth enables transmission; a receiver in its own pairing mode is selected from Pair new device. Wireless playback quality chooses among supported transmission codecs.Exact FiiO R9, not R7. Installed settings must match the documented labels. · Source checked 2026-11-09
  • Manufacturer-documented FiiO R9 FAQ: Operating modes and supported outputs ↗Output lists by mode — Bluetooth and USB audio output work in Android/Pure Music/AirPlay/Roon modes, but not Bluetooth Receiving, USB DAC or optical/coaxial decoding modes. HDMI modes also exclude optical/coaxial outputs.Exact FiiO R9, not R7. Installed settings must match the documented labels. · Source checked 2026-11-09

a2

Select a mutually supported quality

Choose only a codec documented for both R9 transmission and that receiver. If the setting is missing or the receiver capability is unknown, stop rather than assuming activation.

Look for: Perform this one check and observe the actual response.

  • Manufacturer-documented FiiO R9 FAQ: Bluetooth transmitter ↗Instructions 1–3 — Settings > Bluetooth enables transmission; a receiver in its own pairing mode is selected from Pair new device. Wireless playback quality chooses among supported transmission codecs.Exact FiiO R9, not R7. Installed settings must match the documented labels. · Source checked 2026-11-09
  • Manufacturer-documented FiiO R9 FAQ: Operating modes and supported outputs ↗Output lists by mode — Bluetooth and USB audio output work in Android/Pure Music/AirPlay/Roon modes, but not Bluetooth Receiving, USB DAC or optical/coaxial decoding modes. HDMI modes also exclude optical/coaxial outputs.Exact FiiO R9, not R7. Installed settings must match the documented labels. · Source checked 2026-11-09

result

Check the actual result

Is the mutually supported choice available in that transmission-quality menu?

Look for: Choose only a detail you can confirm.

  • Manufacturer-documented FiiO R9 FAQ: Bluetooth transmitter ↗Instructions 1–3 — Settings > Bluetooth enables transmission; a receiver in its own pairing mode is selected from Pair new device. Wireless playback quality chooses among supported transmission codecs.Exact FiiO R9, not R7. Installed settings must match the documented labels. · Source checked 2026-11-09
  • Manufacturer-documented FiiO R9 FAQ: Operating modes and supported outputs ↗Output lists by mode — Bluetooth and USB audio output work in Android/Pure Music/AirPlay/Roon modes, but not Bluetooth Receiving, USB DAC or optical/coaxial decoding modes. HDMI modes also exclude optical/coaxial outputs.Exact FiiO R9, not R7. Installed settings must match the documented labels. · Source checked 2026-11-09

Possible result

Confirm the unknown detail first

Do not infer a source setting, installed cartridge, connector role, software state or partner capability. Obtain the exact documentation before continuing.

insufficient data

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

    Possible result

    Keep the actual observation for support

    Record the exact model, source, input and last observed response. These checks do not diagnose a failed component. No reset, service work or blind update is prescribed.

    next support

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

      Possible result

      Checks completed — keep the observed result

      This records the observation in this particular setup, not a guaranteed cure, physical Audio Review test or measurement.

      steps completed

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

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