After installation, the volume changed by one division out of 100, then two days later, at some point, the sound disappeared for a second, as if the device had rebooted and the sound could only change by 2 divisions. For such sensitive headphones is critical. You have to put your hands up after the change during, for example, a conversation in mits / zoom, because you canโt do 15 in any way. Technical support suggested actions that he himself had already carried out and did not lead to results. The software cannot be ated, because. gives an error connecting to the Internet, there is still no answer from support. Otherwise, the ears are cool, but such moments spoil the overall impression of the ears for such money.