ive installed car steros all my life, my good friend has also. when he built his jeep he had everything pro installed, why??? when you have over 6k watts runnin threw your jeep a warrenty is a good thing. he had a jeep cherokee with a wall behind the backseat, 4 RF hx2 2 amps in a rack and all compnets were RF with an alpine head unit, 25 farad cap custom made by RF. anyways it was like 15k for this system. he blew the box apart like 6 times and popped all 4 subs at different times. and every time all he had to do was take it in and dropp it off and in a few hours it was ready to go.