Portronics Muffs A4 — Troubleshooting Guide

TABLE OF CONTENTS

• Quick Troubleshooting
• 1. Headphones Do Not Turn ON
• 2. Bluetooth Pairing Does Not Work
• 3. Headphones Do Not Reconnect to a Previously Paired Device
• 4. 2.4GHz Wireless Mode Does Not Work
• 5. 2.4GHz Receiver Does Not Work Through USB-A
• 6. No Sound Through the 3.5mm AUX Cable
• 7. ANC and Transparency Modes Do Not Switch
• 8. Spatial Audio Does Not Turn ON or OFF
• 9. Microphone Is Not Working
• 10. Voice Assistance Does Not Activate
• 11. Headphones Do Not Charge
• 12. Battery Runs Out Quickly
• Important Safety Reminders
• Still stuck?

Quick Troubleshooting

1. Headphones Do Not Turn ON

1. Press and hold the Power Button to turn ON the headphones.
2. If there is no response, connect the USB-C charging cable.
3. Allow the headphones to charge.
4. Disconnect the charging cable before use.
5. Press and hold the Power Button again.

Do not use the headphones while charging.

2. Bluetooth Pairing Does Not Work

1. Turn ON the headphones by pressing and holding the Power Button.
2. Check that the blue indicator flashes, showing pairing mode.
3. Open Bluetooth settings on your phone or computer.
4. Search for the Muffs A4 device entry.
5. Select it to connect.
6. If pairing fails, toggle Bluetooth OFF and ON on the connected device and try again.

If previously connected devices are unavailable, the headphones can enter pairing mode automatically.

3. Headphones Do Not Reconnect to a Previously Paired Device

1. Make sure Bluetooth is enabled on the phone or computer.
2. Check that the headphones are switched ON.
3. Toggle Bluetooth OFF and ON on the connected device.
4. Select the Muffs A4 entry again if it does not reconnect automatically.

4. 2.4GHz Wireless Mode Does Not Work

1. Confirm that the 2.4GHz dongle is inserted into the device.
2. Turn ON the headphones.
3. Double-press the Power Button to switch between Bluetooth and 2.4GHz Wireless Mode.
4. Check that the computer or device is using the connected receiver.
5. Start audio playback again.

5. 2.4GHz Receiver Does Not Work Through USB-A

The supplied dongle has a Type-C receiver and a USB-A adapter.

1. Take the Type-C receiver.
2. Insert it into the included USB-A adapter.
3. Connect the USB-A adapter to the computer's USB-A port.
4. Turn ON the headphones.
5. Double-press the Power Button to select 2.4GHz Wireless Mode.

Do not connect the Type-C receiver directly to a USB-A port without the adapter.

6. No Sound Through the 3.5mm AUX Cable

1. Connect one end of the AUX cable firmly to the headphones.
2. Connect the other end to the 3.5mm audio output of the phone, PC or audio device.
3. Check that the source device is playing audio.
4. Check the source device's output volume.
5. Reconnect both ends of the cable.

7. ANC and Transparency Modes Do Not Switch

1. Locate the Mode Button.
2. Press it once to switch between ANC and Transparency modes.
3. Check the ANC indicator or mode indicator.
4. The product sheet describes solid green for Transparency and an active ANC indicator for ANC.

8. Spatial Audio Does Not Turn ON or OFF

1. Locate the Mode Button.
2. Press and hold it to toggle Spatial Audio.
3. A blue Spatial Audio light indicates ON.
4. When the blue Spatial Audio light is OFF, Spatial Audio is OFF.

A single press of the Mode Button is for ANC / Transparency switching; use a long press for Spatial Audio.

9. Microphone Is Not Working

1. Check that the detachable microphone is connected securely to the headphones.
2. In the calling, meeting or gaming application, check that the Muffs A4 microphone is selected as the input device.
3. Check the app's microphone permissions and input level.
4. Test the microphone in another compatible application if necessary.

10. Voice Assistance Does Not Activate

1. Check that the headphones are connected to the phone.
2. Confirm that voice assistance is enabled on the connected phone.
3. Triple-tap the Power Button.
4. Check whether the phone's voice assistant responds.

11. Headphones Do Not Charge

1. Connect the USB-C cable firmly to the headphones.
2. Connect the other end to a USB adapter or computer USB port.
3. Check that the charging indicator is visible.
4. Allow approximately 2 hours for charging.
5. The indicator turns OFF when fully charged.

12. Battery Runs Out Quickly

The supplied product sheet lists up to 60 hours in Bluetooth mode and up to 38 hours with Bluetooth + ANC. The current product listing advertises up to 80 hours.

Actual battery life depends on volume, ANC / Spatial Audio, connection mode and usage conditions. Charge fully before testing runtime and compare under consistent settings.

Important Safety Reminders

• Do not use the headphones while charging.
• Keep away from water and extreme heat.
• Clean with a soft, dry cloth.
• If connection fails, toggle Bluetooth OFF/ON and try again.
• Use the included USB-A adapter when connecting the Type-C receiver to a USB-A port.

Still stuck?

If the issue persists after performing all troubleshooting steps, please raise a support request.

Our support team will assist you further.

Support

• Visit: www.portronics.com
• Support Portal: support.portronics.com