Crank it up just once

Howdy. I did a couple of searches & really didn't come up with a good thread. I have the notion of wanting to crank the heck out of my system just once. We all have a lot of mmoney invested in our systems & frankly I am seriously paranoid about frying something. BUT it would be a gas to try it a time or two. Maybe a little Dark Side of the Moon, both sides start to finish..? Any insight on doing it without fritzing something? System is; Krell KRC2, pre; Krell KPE Reference phono; Krell FPB300cx, main: Krell Infinity Rennaisance 90 speakers. Highest I have had it is a little past 1:00 (volume)with the gain on high. And that is with the phono. Maybe 12:00 with th CD player. Room is big enough, but my nerve isn't.