Originally Posted by
pizzaguy
Stay away from the preamp outputs. I just did read up on it, and the amp is expecting to be driven by a SPEAKER OUTPUT, not a preamp output. THe preamp outputs on your head are useless in this car. (Which is no big deal.)
Have not looked up the HU specs.. but based on this I'm going to wager 2V outputs, Which is why the 4V outputs are basically "mandatory" for using the RCA outs.