jack-mixer 10-1build2 (amd64 binary) in ubuntu focal

 jack_mixer is an audio mixer for JACK with a look similar to its hardware
 counterparts. Many features are available, here is a short list:
 .
  - Mix any number of input channels (mono or stereo).
  - Control balance and faders with MIDI commands.
  - Handle session management with LASH.
  - Create as many outputs as necessary.
  - Quickly monitor inputs (PFL) and outputs.