We’ve talked at length about why you might want to turn down on stage, and how that can improve your stage sound overall. This conversation usually centers around guitar cabinets. There is ample justification for that, as an out of control guitar can be problematic, especially in a small room.
It’s no secret house sound engineers fight with guitarists about proper stage volume for amps, especially in small venues. It may even be a bit of a cliché to mention it. “Turn it down!” often becomes “I’ll turn it down for you!” and “I need it louder!” turns into “I’ll just sneak over here and turn this up…”.