I had a guy with the same situation come and see me about his amp. It seems that others with access to the space were using his gear and liked to turn everything to 11. They blew a couple speakers and melted a power tube. To give him some control, I installed an ignition switch in the amp. You have to have the key or it won't turn on. I can't claim to have invented the idea. Ampeg in NYC offered it as an option for studio guys a long time ago so they wouldn't have to shlepp heavy bass amps to and from the studio or club they were working in.