I woulnt own a RF product, SteelCitySounds off of ROE, was blowing up T2 15s with a pair of T20001BDs on a 4 T2 15s, and there amps i have heard people saying how many they have had problems with, kowboy on here had two T3000s and blew both of them, and they got really warm, look at the amp guts they are bare, and for what they cost you could do alot better, look at what a T20001 cost compared to what a SAZ3000d costs, i would take the sundown over any of the RF amps, and the 15kw isnt even a amp for any of us on here, unless your big in with RF like Steve Meade is, or how many of us are going to spend $15k on a da*n amp nobody, and birthsheets are just a made up piece of paper, i look at birth sheets, from kicker, RF, mtx companies like that, the MTX and RF might have numbers like this from there 4kws, 3898,4020,4888,4597,4213, numbers all over the place, and then kicker will have, the most popular, 2960,2700,2690?? Birth sheets mean nothing in the real world, just a da*n jap person typing on a computer, no car testing done, i would take a SAZ3000D, AT3000D, RD3250 or a Memphis 4kw over any RF amp out there, over priced, and your paying for a name, more than a good product, sure there items are good, but not that good for the price they cost you, and you dont see RF putting up good numbers in the lanes!