SUMMARY Pulse audio can create combined audio output consisting in fact in other outputs to allow simultaneous use of the outputs. Great to use the headphone through jack and bluetooth, or multiple bluetooth output even. Very useful when traveling with someone to watch the same video for instance. It would be great to use some UI in plasma-pa to enable this easily. Ref: https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Modules/#index11h3 https://wiki.archlinux.org/index.php/PulseAudio/Examples#Simultaneous_HDMI_and_analog_output https://bbs.archlinux.org/viewtopic.php?id=118026
We allow using that module to output to all sinks via Configure > "Add virtual output device for simultaneous output on all local sound cards". We do not allow to specify a subset of devices to be combined though
I guess I didn't find the checkbox when I looked for this, this has been implemented for years.