pavucontrol

PulseAudio Volume Control — a GTK-based volume control tool for the PulseAudio sound server. This is a custom build with GTK4 support.

Package details

Version	6.2-1
Architecture	amd64
Component	main
Download	pavucontrol_6.2-1_amd64.deb
Upstream	freedesktop.org/software/pulseaudio/pavucontrol

sudo apt install pavucontrol

See the main page for repository setup instructions.