At first, the volume was not enough, but the problem was solved by turning on "Sound volume synchronization". This switch is very far hidden and can be found by going to Settings, then Connections, after that Bluetooth, click on the 3 dots in the upper right corner of the screen, and there will already be an item "Sync. sound volume". I will not write it down as a disadvantage, but I will note that in the acoustic transparency mode, some sounds are amplified, which should not be amplified. Since this mode is designed primarily to hear the speech of other people, then I definitely would not expect that the sound of rotation of the blades of the air conditioner in the office will be amplified, which is not audible at all live, and in these headphones with "transparency" turned on it becomes You can hear every turn of the screw. In addition, the wind and the rustling of packages intensify, and I think that the list is not exhausted by this. Probably, the manufacturer should have thought better about the filter device, which is responsible for transmitting sounds in transparency mode.
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