The key words in the amp description is that it is a non regulated power supply, meaning they can draw any ammount of power. From 10 volts to like 16. The more voltage the amps get, the more power they produce. Unless you upgrade your alternator to a high output alternator, change the battery under the Hood
to a yellow top, AND throw a yellow top in the back too, your system is NEVER going to play to it's potential. I went thru all this for my set up. Don't blow the money on high end electronics, when they aren't going to play to their best. Our alternators are only like 85 amps. The car's electronics with the heater off and the headlights off is about 35-40 amps!! That only leaves about 40 amps to run the system. My system draws about 90 amps, in addition to the regular car stuff! Just be careful, don't want you to waste some large $$$.