Start by examining the available sources and sinks
You'll need to load the looback module first
Code:
pactl load-module module-loopback latency_msec=1
then use pavucontrol to select the desired source (Recording tab) and sink (Playback tab)
This can also be done via the pactl command itself eg
Code:
pactl load-module module-loopback latency_msec=1 source=1 sink=0
A Similar thread which may be of value
https://askubuntu.com/questions/4034...nal-sound-card
BTW, you can make it permanent by adding the required user configuration in ~/.pulse/default.pa
For example
https://unix.stackexchange.com/quest...-output-volume