We were gradually playing larger venues and in the early days PA systems were kind of non-existent. So to play loud, we had to use louder equipment. The PA systems back then didn't mic the instruments - only the vocals.
“Told that the passing grade is a B or competence and that we will help you to get there, students do competent work. The lowest passing grade in the real world is competence. Why do schools accept so much less?”