So Hifonics put out rated power and clean power? I guess what I am asking is. Whats the down side to buying a cheaper amp? Do some of them not put out rated power? Not last as long? Can they damage your sub? Can you actually hear a difference between 2 different amps that put out the same watts??? I know it probably comes down to "you get what you pay for" but I'm just trying to understand what the difference is.