I had been using Logitech USB speakers, but the device did not show up in PulseAudio and when I attached it to the Qube I wanted to use, it would produce sound, so I continued to use this.
However, because the volume cannot be adjusted in PulseAudio, I could not make the sound louder, so I bought this one with a knob
and connected it to PulseAudio. I tried to connect it to my PulseAudio, but this time it was recognised and I could attach it, but no sound came out.
The same thing happened when I disconnected the Logicool one, turned it off, connected a new speaker, turned it on and attached it. I would like to know if there is a better way to do this.