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C82 Aura - Fix No Sound

  • Updated
No sound from your C82 Aura may be caused by an incorrect USB audio output, hearing aids that have not joined the Auracast broadcast, or an incompatible broadcast sampling rate. Follow the 3 steps below to restore audio.
1

Check the USB Audio Source

  1. Plug C82 Aura securely into a supported computer, phone, or tablet with USB audio output.
  2. Play music or a video.
  3. Open the device's sound settings and select C82 Aura / USB Audio as the audio output, if required.
  4. Increase the source device's volume gradually.
I'm Using C82 Aura with Windows
  1. Open Settings → System → Sound.
  2. Under Output, select C82 Aura / USB Audio.
  3. Make sure the audio is not muted.
  4. Play music or a video to test.
I'm Using C82 Aura with Mac
  1. Open System Settings → Sound.
  2. Select Output.
  3. Choose C82 Aura / USB Audio.
  4. Adjust the volume and test audio.
I'm Using C82 Aura with a Phone or Tablet
  1. Confirm your phone or tablet supports USB audio output.
  2. Plug C82 Aura directly into its compatible USB port.
  3. Start playing audio.
  4. If your device offers an audio output selector, choose the connected USB audio device.
  5. Increase the source volume gradually.
Tip: If C82 Aura is not recognized, unplug and reconnect it. Some USB ports or adapters may not support USB audio output.
2

Check the Auracast Connection

Make sure your hearing aids or other Auracast-compatible listening device have joined the C82 Aura broadcast.

  1. Turn on your Auracast-compatible hearing aids or listening device.
  2. Open your hearing aid app or a compatible Auracast Assistant.
  3. Search for available Auracast broadcasts.
  4. Select the C82 Aura broadcast.
  5. Confirm the broadcast has been joined, then play audio again.
Important: C82 Aura uses Auracast broadcasting. Do not try to pair it as a regular Bluetooth headphone. Use the Auracast connection method supported by your hearing aids or listening device.
Can't Find the C82 Aura Broadcast?
  1. Confirm your exact hearing aid or receiver model supports Auracast.
  2. Keep Bluetooth enabled on your phone if your hearing aid app requires it.
  3. Keep your hearing aids and phone close to C82 Aura.
  4. Update your hearing aid app and firmware.
  5. Restart your hearing aids and phone, then search again.
Hearing Aid Connection Guide →
Broadcast Joined, but Still No Sound?
  1. Stop any phone calls, music, or other audio currently streaming to your hearing aids.
  2. Check that C82 Aura is selected as your source device's audio output.
  3. Leave the broadcast and join it again.
  4. Check your hearing aid's streaming volume.
  5. Continue to Step 3 to check the broadcast sampling rate.
3

Check the Broadcast Setting and Volume

Look at the LED on C82 Aura. The color shows its current Auracast sampling rate.

White LED – 24 kHz

Recommended for Auracast hearing aids.

Orange LED – 48 kHz

Recommended for compatible Auracast headphones and speakers.

Important: The white and orange LEDs show the broadcast sampling rate. They do not confirm whether your hearing aids have joined the broadcast.
How Do I Switch Between 24 kHz and 48 kHz?
  1. Locate the multifunction button on C82 Aura.
  2. Press and hold it for 6 seconds.
  3. Check the LED:
    • White: 24 kHz
    • Orange: 48 kHz
  4. For Auracast hearing aids, select 24 kHz (white).
  5. Rejoin the broadcast if necessary and test the audio again.
  1. For hearing aids, confirm C82 Aura shows the white LED (24 kHz).
  2. Adjust the Auracast streaming volume using your hearing aid app or supported phone controls.
  3. Increase the source device's volume gradually.
  4. Play audio again and listen for sound.
Expected: Your listening device has joined the C82 Aura broadcast, the sampling rate is compatible, and audio plays normally.
Still No Sound? Try These Additional Fixes
  1. Unplug C82 Aura and reconnect it.
  2. Confirm C82 Aura / USB Audio is selected as the source device's audio output.
  3. Restart your hearing aids and rejoin the Auracast broadcast.
  4. Check the hearing aid's streaming volume in its app.
  5. For hearing aids, verify the LED is white (24 kHz).
  6. Test C82 Aura with another compatible USB audio source, if available.
Review C82 Aura Troubleshooting →

Still Need Help?

Tell us your hearing aid or Auracast receiver model, the computer, phone, or tablet you're using, and whether C82 Aura's LED is white or orange.

ASK A QUESTION

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