Alll headphones has this value attached to them. For example Pioneer HDJ-2000 has 3500mW. I know that if this property is high the headphones can produce louder sound. But what I was wondering about is - does this value represents the optimum input mW for headphones or is it the max power that these headphones can take and beyond that they will break? In practice if I have headphones with 3500mW does that mean I have to get amp that outputs the same to get the best out of them or does it mean that I cant plug them into anything that outputs more than 3500?