HT4186-Q – How to Add the 2nd Pair of Headphones?

Before You Start: The HT4186-Q allows two pairs of Bluetooth headphones to connect to the same transmitter. To avoid interference, turn OFF your TV and nearby Bluetooth devices, and keep both headphones within 1–3 feet of the transmitter.

Important: The original NB16-Q headphones must connect first. Keep them ON and connected while pairing the second headphones.

Step 1 – Connect the Original NB16-Q Headphones

1. Turn ON the transmitter and original NB16-Q headphones.
2. Wait until the transmitter's 1 indicator turns Solid BLUE.

Not Connecting? Reconnect the original headphones before continuing.

Step 2 – Pair the Second Headphones

1. Keep the original NB16-Q headphones ON and connected.
2. Put the second headphones into Bluetooth pairing mode according to their instructions.
3. On the transmitter, press and hold the 2 button for 5 seconds until its LED flashes RED & BLUE:

Not Sure How to Pair Your Headphones?Bluetooth Headphones Pairing Mode Guide →

Step 3 – Wait for the Connection

Keep the headphones close to the transmitter and wait until the LED indicators stop flashing and turn Solid BLUE.

Both headphones are now connected. Turn your TV back ON and test the sound.

Still Not Connecting?

1. Make sure the original headphones remain connected (1 – Solid BLUE).
2. Check that the second headphones and transmitter's 2 indicators are flashing RED & BLUE.
3. Repeat Steps 2–3.

How to Reconnect Both Headphones Next Time

1. Turn ON the transmitter and original NB16-Q headphones. Wait until 1 turns Solid BLUE.
2. Turn ON the second headphones and wait 5–10 seconds for 2 to turn Solid BLUE.

Not Reconnecting? Press the transmitter's 2 button once and wait another 5–10 seconds.

Still Need Help?

If the second headphones still won't connect, contact Avantree Support and include the headphone brand and model and the LED status on the transmitter and both headphones.