How can I see the strength level coming from the booth to the ME-1 How can I view the signal strength that I’m receiving from the D snake to the input jack of the ME one I’m having a problem with the volume level changing all the time and I’m arguing with the sound guy that they’re changing the signal strength that they’re sending to me at the ME-1 How can I view the level that I’m receiving to the input from the booth not the level that I’m putting out to the ear phones but the level that I’m receiving into the box