[A790]

I see we agree here..

on and think like kia if you change something in the car they don't have to back the warranty since you changed it..
I mean you put speakers in your car that need 90 watts
stock head unit 30 watts or so
equals a overload that at somepoint most likely will fry it..
kia won't give you another one... they don't have too you changed it which means you broke it
but if a cd stock in it.. they'd most likely have to fix that... but lol maybe they'd blame it on you..see where I'm going here

Ignore this person.

Worst case scenario when running 90wrms on a 30wrms channel is that you will distort your speakers at louder volumes.