the kicker is a well built amp.
imho though it is overpriced along withmost car audio products from mainstream brands.
i have seen many a birthsheet from the KX1200.1 at or above 1400 and have been told of several with birthsheets above 1500.
so they do produce their rated power then some.
my understanding fo the new SX line as compared to the KX is they are more loaded with features.
excelon|PPI|Tsunami|eD|Diamond Audio|peal and seel|
USACI b-stock 601+ best of 153.3 aiming for 155
dbdrag street A best of 143.5 on new sensor