QjackCtl
User interface for controlling the JACK sound server
JACK Audio Connection Kit - Qt GUI Interface: A simple Qt application to control the JACK server. Written in C++ around the Qt framework for X11, most exclusively using Qt Designer. Provides a simple GUI dialog for setting several JACK server parameters, which are properly saved between sessions, and a way control of the status of the audio server. With time, this primordial interface has become richer by including a enhanced patchbay and connection control features.
Qjackctl offers a user interface for controlling the JACK sound server daemon. At the same time it figures as a JACK patch bay and monitoring tool.
How to install QjackCtl in Ubuntu
If you are on a supported distro, you can install the application through software center by clicking the below link.
If the above link not working, run the below command in terminal to install qjackctl in Ubuntu
sudo apt install qjackctl