Soundjet R2 - Fix No Sound – Avantree Support

No sound from your SoundJet R2 may be caused by Bluetooth headphones that are not connected, an incorrect AUX or USB audio connection, or low volume on the audio source or headphones. Follow the 3 steps below in order.

Check the Bluetooth Headphone Connection

Turn on SoundJet R2 and your Bluetooth headphones. Check whether they are connected.

Connected

If your headphones are connected, continue to Step 2.

Flashing Red & Blue

SoundJet R2 is in pairing mode. Pair your headphones to continue.

Important: The flashing red and blue LEDs indicate pairing mode. A connection must be established before SoundJet R2 can transmit audio to your headphones.

Headphones Not Connected? Try Pairing Again

Turn off Bluetooth on nearby phones, tablets, or computers that your headphones may reconnect to.
Put your headphones into Bluetooth pairing mode.
Put SoundJet R2 into pairing mode using its multifunction control.
Keep both devices close together.
Wait for the connection to complete, then test the audio.

Tip: Simply turning on your headphones may not activate pairing mode. Follow the pairing instructions for your specific headphone model.

I'm Using Apple AirPods or AirPods Pro

Disconnect any second pair of headphones from SoundJet R2 while troubleshooting.
On nearby iPhones and iPads, open Settings → Bluetooth and turn Bluetooth off temporarily.
On nearby Macs, open System Settings → Bluetooth and turn Bluetooth off temporarily.
Put your AirPods into pairing mode.
Put SoundJet R2 into pairing mode and keep both devices close together.
Wait for the connection to complete.

Important: AirPods may automatically reconnect to an Apple device instead of SoundJet R2. Turn Bluetooth off through the device's Settings while troubleshooting.

Fix SoundJet R2 and AirPods Connection Issues →

Check the Audio Source Connection

SoundJet R2 supports 3.5 mm AUX audio and compatible USB audio input. Select the instructions for your connection.

I'm Using SoundJet R2 on an Airplane

Locate the airplane seat's headphone audio output.
If the seat has a standard 3.5 mm headphone jack, plug SoundJet R2 directly into it.
If the seat has a compatible dual-prong headphone socket, use the appropriate airplane adapter.
Make sure the connection is secure.
Start a movie or music on the in-flight entertainment screen.
Increase the screen's audio volume.

Tip: The dual-prong airplane adapter is only needed for a compatible dual-prong audio socket.

I'm Using a TV or 3.5 mm AUX Audio Source

Find the TV or audio source's Headphone / Audio OUT port.
Plug SoundJet R2 into the 3.5 mm audio output.
Make sure the cable or connector is fully inserted.
Select the headphone output in the TV's sound settings, if required.
Play audio and increase the source's output volume.

Important: Connect SoundJet R2 to an audio output, not an AUX input or microphone port.

I'm Using SoundJet R2 with a Windows PC

Connect SoundJet R2 to a compatible computer USB port using a suitable USB cable.
Open Settings → System → Sound.
Under Output, select Avantree SoundJet R2.
Make sure the output is not muted.
Increase the volume and play audio.

For calls: If using Teams, Zoom, or another meeting application, select Avantree SoundJet R2 in the application's audio settings as well.

SoundJet R2 Computer Setup Guide →

My Computer Doesn't Detect SoundJet R2

Disconnect SoundJet R2 from the USB port.
Reconnect it using a compatible USB data/audio cable.
Try another computer USB port.
Open the computer's sound settings and look for Avantree SoundJet R2.
If it appears, select it as the default audio output.

Important: A charging-only USB cable or an unsupported USB audio source may not provide an audio connection.

Expected: Your audio source is connected to SoundJet R2 and is playing audio.

Check the Volume and Test the Sound

Make sure the audio source is playing sound and is not muted.
Increase the volume on the airplane screen, TV, computer, or other audio source.
Increase the listening volume on your Bluetooth headphones or earbuds.
If the headphones have separate volume controls, check those as well.
Play a familiar video or music track to test the sound.

Expected: Your headphones are connected, the correct AUX or USB audio input is being used, and sound plays through your headphones.

Headphones Still Won't Connect? Reset SoundJet R2

If SoundJet R2 will not reconnect to your headphones, clear its Bluetooth pairing history.

Turn on SoundJet R2.
Quickly double-click the Multifunction Button (MFB).
The red and blue LEDs illuminate together for approximately 3 seconds, appearing pink.
SoundJet R2 then enters pairing mode, with the LED flashing red and blue alternately.
Put your headphones into pairing mode and reconnect them.

Pink — About 3 Seconds

Reset confirmation. Red and blue LEDs are illuminated together.

Note: Resetting SoundJet R2 clears its saved Bluetooth pairing history. You will need to pair your headphones again.

SoundJet R2 Factory Reset Guide →

Sound Works with One Pair of Headphones but Not Another

Disconnect the headphones that are currently working.
Put the other pair into Bluetooth pairing mode.
Reconnect them to SoundJet R2.
Make sure they are not connected to another nearby device.
Increase their volume and test audio.

Tip: Testing one pair at a time helps determine whether the issue involves the headphones or SoundJet R2.

Sound Is Crackling, Popping, or Cutting Out

If audio plays but contains crackling or popping noises, the issue may be different from a complete no-sound problem.

Test with another audio source.
Keep the headphones close to SoundJet R2.
Check that the audio connector is securely inserted.
If the issue persists, review the official firmware update instructions.

SoundJet R2 Firmware and Support Guides →

Still Need Help?

Tell us your Bluetooth headphone model, whether you are using 3.5 mm AUX or USB, your audio source, and what the SoundJet R2 LED does when you try to connect.

ASK A QUESTION