What does the indicator light on the HD4 front panel mean?

The light on the front panel of the HD4 Wireless is the Bluetooth LED indicator. Below are the various Bluetooth LED statuses and their meanings.

• Bluetooth LED is on and solid: The HD4 Wireless has power and currently connected to a Bluetooth-enabled device.
• LED indicator illuminates orange instead of white: This is normal! It means that your source is currently sending the HD4 Wireless an aptX signal.
• Bluetooth LED is on and blinking: The HD4 Wireless has power and the Bluetooth receiver is in pairing mode.
• Bluetooth LED is off and HD4 Wireless is on: Bluetooth is in standby and not in pairing mode. However, the HD4 Wireless is still visible to your device, so simply connect using your device and it will automatically wake up.