Using both PiSound and RPi 4 headphone out in Jack

Pisound
1

Hi everyone!
I’m wondering if there’s an efficient way to use both PiSound and the internal headphone output in Jack, so I could use it for in-ear monitoring without the need for an external mixer. I tried using alsa_out to register the internal RPi audio as a JACK client, but I noticed it takes quite a bit of CPU and I’m experiencing frequent clicks.

Is there a better way or is it just not possible? I also have a small Sabrent USB audio interface. Would it work better?

2

Probably a USB audio interface would work better. The high cpu usage when using built-in jack could possibly be because it does not support 48kHz rate, so the CPU must resample.