I was helping my friend build his first system and i got him two kicker cvr's 12's for 165. and i built him a sealed box. then i had him replace his interior speakers with 6x9 infinities all around. then i got him a 1000 watt 4 channel profile amp for 90 and that was for his interior. then i got him a 1000 watt two channel amp for the two 12's and i got him that for 135. man i must say that his system sound pretty great for his very first setup. i mean i read and heard alot about profile amps. but when i heard them in action i was greatly impressed. the amps barely got warm at all and his system hits pretty good. especially because i got him all of this stuff for under 400 dollars.