Low volume with airpods( pro) on PS4
1. Please pair your airpods(pro) with your phone first, adjust the volume. Then pair again with leaf.
2. If you use Airpods pro, please upgrade the firmware of leaf according to this link.
3. You can adjust the volume on PS4 too.
Go to "Settings" -> "Devices" -> "Audio Devices" -> "input/output devices" set as the bluetooth adpater
2. Adjust the volume to Maximum on PS4 using the controller.