We use the same thing....dial in your own mix. I’m not real big on it. I am trying to get a master house mix sent to my ears. I wanna hear what the audience hears. I wanna know if I’m too loud, not loud enough. Unfortunately we are not blessed with quality sound people. Kind of the opposite really. So they have no idea what I’m doing as a musician. A master mix to my ear allows me to blend better. I think it would be great for vocals as well. Harmonies can drop back better, lead vocals change, so they can sing a little louder, because our sound guy didn’t notice and adjust the levels. Man, a good sound person is sooooo important! They can get a good mix, but then don’t know when a solo comes in, or I switch instruments, or the lead vocals changed to someone else and the harmonies are too loud.ugh...