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n1kk/set_max_input_volume.md

Last active September 13, 2021 18:20
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How to crank input mic volume beyond max on linux
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set_max_input_volume.md

Find the index of the input device

Run alsamixer (or alsamixer -c 1 if you get errors) and set mic boost there to some unique value, like 96% (-1,00 db).

You can also change a setting in the gnome menu and try to find it in the listing of pactl list.

Now run this command but replace the value with yours

export VAL=96%; pactl list | sed -n "/^Source #/{x; /$VAL/p; d; }; /$VAL/H;"

You should see smth like this

Source #4
	Volume: mono: 63069 /  96% / -1,00 dB

That is your device index, 4 in this case, it can change between reboots so saving it is not recommended.

Set the volume over max 150%

Default value should be 65536 / 100% / 0,00 dB so if you want 200% multiply it by 2, so 131072

# 150%
pacmd set-source-volume 4 98304
# 200%
pacmd set-source-volume 4 131072
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