Arch (Manjaro) Linux Remap Left and Right Audio Channels to be Reversed

Note: this was performed back in 2019.

# Create additional pulse audio config directory if not already exists
$ sudo mkdir /etc/pulse/

# Create additional config
$ sudo nano /etc/pulse/

load-module module-remap-sink sink_name=reverse-stereo master=0 channels=2 master_channel_map=front-right,front-left channel_map=front-left,front-right

# Uncomment below if wanting to set as default
# set-default-sink reverse-stereo

# Restart pulse audio NOTE: run without sudo
$ systemctl --user restart pulseaudio

Now you should be able to view the new audio device in Sound settings.