I have an Aguilar AG500SC that puts out 500 watts into 4 ohms. I also have a GS212 4 ohm cabinet to be able to receive all 500 watts. But I was wondering, are all of those 500 watts ever being used? For example, if the master volume is maxed, am I getting them then? Or, what about when I adjust the gain? Does that control the wattage? Would both master volume and gain have to be cranked in order to have full wattage? If someone could put that in perspective, I would be ever so thankful.