remove dell display from pulse so it stops becoming default
pactl list sink (find NVA monster) pactl unload-module 7 (7 is module owner from above)
Add a mono output: https://askubuntu.com/a/99960
Add to /etc/pulse/default.pa
# Load remapped audio to add mono option:
load-module module-remap-sink sink_name=mono master=$(pacmd list-sinks | grep -m 1 -oP 'name:\s<\K.*(?=>)') channels=2 channel_map=mono,monoor run:
$ ```bash
pacmd load-module module-remap-sink sink_name=mono master=$(pacmd list-sinks | grep -m 1 -oP 'name:\s<\K.*(?=>)') channels=2 channel_map=mono,mono