load-module module-echo-cancel aec_args="analog_gain_control=0 digital_gain_control=0"
+
in the file:
/etc/pulse/daemon.conf
or
~/.config/pulse/daemon.conf
Uncomment the line, and set to no:
flat-volumes = no
load-module module-echo-cancel source_name=logitechsource
and then at the bottom of the file add
set-default-source logitechsource
In this case I named the source logitechsource, but you can name it whatever you want and simply either restart pulseaudio.
[on the client] add a local /etc/[pulse/]default.pa containing:
load-module module-tunnel-sink sink_name=rpi_tunnel server=tcp:192.168.2.13:4713 sink=bcm1
If you don't put a sink_name in, pulseaudio won't start. The sink refers to the sink name on the [server] side [determined via: pactl list | grep -C5 Sink | grep 'Name:']