here's the deal.
theySAY that they put out a ton of power for the price. it's just not true, unless (like Brian said many times) lightning strikes it.
i had a power Acoustic a few years ago that had 2200 watts written on it. of course that was the peak rating, but the manual said it put out 1100 watts rms. that was just a bunch of B.S. because my Orion HCCA 250G4 was rated @ 800 watts rms, and it was MUCH louder (and cleaner power too).
look at the fuses on the PA/farenheit amps. mine had two 20A fuses on it. you sure as hell cant get 1100 watts rms through two 20A fuses.
not only that, but they dont last very long. you're better off spending the money on somethin that is built better.
stay away from the generic car audio market.