Microphone is too silent in the VM with Windows 10 or 11

[boxer01]

I have an old problem with microphone: even with the maximum level on the host, it is nearly silent in the guest. If I test it on the host, I can see the level goes to 100%, but the same test in the guest gives only 10% volume.

I searched the tickets and forum. All I could find is the suggestion to use Line-in in pre-Windows 10 versions, but there is no Line-in in my Windows 10 or Windows 11 VM. My host is Windows 10 by the way.

So, my question is: are there any other possibilities to bring the microphone volume to the right level in the guest?

[boxer01]

The logs of the VM with the silent microphone

[boxer01]

Still here in 7.0.11-158811 and 6.1.47-158777. Any chance to some correction?

[boxer01]

Still here in 7.0.11-159210 and 6.1.47-159049.