# Ubuntu – JACK and PulseAudio multiple sinks

alsajackpulseaudiosound

I successfully configured PulseAudio to run ontop of JACK by following this surprisingly easy description.

Now I wonder if there is a way (at first I was certain of it) to have multiple sinks between JACK and PulseAudio, for example to record two PulseAudio applications seperately at once. I tried for example changing load-module module-jackdbus-detect channels=2 in /etc/pulse/default.pa to 4 channels – but then PulseAudio won't even start.

Also, I'd really like to use this feature to reduce the volume of the JACK output before playback because I don't want to blow my ears. I also thought of creating virtual streams in PulseAudio and I may try to figure that out next, though I don't know wether I will find use for it. If I have had an idea, I already forgot. 😉 Tell me if you know already.

[EDIT]

• Multiple pulseaudio sinks/sources are available from pulseaudio v6.0 and later. As Ubuntu uses it's own version numbering, check true version number with:

  pulseaudio --version


Extra sinks/sources can be loaded by terminal command, or using QJackCtl Option 'Execute script after Startup' commands or bash script

pactl load-module module-jack-sink client_name=pulse_sink_2 connect=yes