My Blu-ray player, PS5, and TV box are all connected to the AVR via HDMI, and the AVR's HDMI ARC port is connected to the TV's HDMI ARC port. Now, how can I add your Bluetooth transmitter to this system?

To integrate our Bluetooth transmitter into your existing setup, in addition to the transmitter itself, you will need an Avantree HAX04.

Here are the steps:

1. Connect HAX04 between your AVR and TV, specifically by connecting the HDMI ARC port on your AVR to the IN port on HAX04, and then connecting the OUT port on HAX04 to the HDMI ARC port on your TV.
2. Disable "HDMI control" in the AVR settings.
3. In the AVR settings, turn on "HDMI audio output".

Only in this way, the AVR will not keep the audio only to itself, but transmit both the audio and video out. Once you've completed these steps, the IN and OUT green lights on HAX04 will indicate that the device is working properly. You can then connect the Bluetooth transmitter to either the optical or AUX port on HAX04.

This will allow the transmitter to receive the audio signal from the HAX04, which will then be transmitted to your Bluetooth headphones for an unparalleled sound experience. Enjoy!