Turning off BT ... and more


first of all I would like to say hello!
I am new commer, dealing with RPi \ Volumio for several days.

I found information that RPi 4 is worse platform in terms of SQ than older RPi because of noisy components, so… maybe turning off whatever is not needed will make it better. I already turned off Wifi because I use ethernet connection, it would be great if volumio would allow turning off different stuff like Bluetooth, usb? hdmi? I am not sure what are the technical possibilities hopefully at least BT would be easy to turn off from GUI like Wifi