Adjust the volume level of hardware devices and applications
[ О приложении ]

PulseAudio Volume Control (pavucontrol) is a volume control tool (“mixer”) for the PulseAudio sound server.
In contrast to classic mixer tools, this one allows you to control both the volume of hardware devices and of each playback stream separately.

Источник
Репозиторий: flathub

FlatPak: PulseAudio Volume Control [Audio & Video]