You could install the latest development version of Pulseaudio v13.99 pulseaudio-git from AUR
but some packages have to be removed to be able to change to the AUR version:
HP Envy - Sound does not work in Manjaro 20.1 PLASMA - #5 by denizx27
I had first to remove libao, fluidsynth, lib32-fluidsynth and manjaro-pulse - after that I could install pulseaudio-git - having installed pulseaudio-git I added libao, fluidsynth, lib32-fluidsynth and manjaro-pulse