If it is a true class A amp. It will use the same amount of power whether it is idling or being driven at full power. So they make a lot of heat and use lots of electricity. They use their rated power continuously. That also makes them very unreliable, unless they are very low powered like 10 watts per channel. The output devices never catch a break.\n\nIf you want a class A amp, then as I keep telling you the answer is Quad current dumpers which are true class A amps, but by sleight of hand. They run co0l and are very efficient and reliable.\n\nA true class A amp in standard configuration is something to run a mile from.\n\n\nIt's the OP who is worried but it apparently isn't class A either......I don't want one.