Ok. ive had this thing on my amp forever. and for safetys sake, i always left it on. i turn it off, and nothing seems diffrent. all the change i see is that when i press the "Limiter" button, a green light flashes, and then the peak light flases when i crank it to hard. Is that a limter? a flashing light? i realized that i took for granted what a limter really does, and i have an IDEA. but someone explain it in detail. Please?