more dumb questions

you need three pre outs if you are going to have a separate amp for your highs and want to retain control of the fader and other controls...if not than one full range output all you need.

There is no sound quality difference or output difference between 4v and 2v outputs...amplifiers have a gain knob to match the inputs

 

The benefit of a higher pre out voltage is the abilityt to turn the amp gain down even more...which lowers the noise floor....in some cars this can make a huge difference....in others. it dont mean crap....

All in all...I would generally go for the HU that ha the higher pre out voltage.

 

viking is right. but ....

lol

the classic example...

I had a 8volt eclipse cd5000

then I bought a 3volt kenwood 6019

and the kenwood sounded TEN times better.

that's just my experience.


and you need 3 preouts if you plan on having a 4 channel amp and a subwoofer.

if you just want a 4channel amp... then you just need 2 preouts..

if you want just a sub woofer, then you just need one preout.

 

having 3 pre outs will offer you more flexabilaty later on.so you can add up to 3 amps.

back in the day you were lucky to have just one.then you were limited on what kind of setup you would have.

so if you can get one with 3 then do so,cause you'll hate yourself for not. if you plan on upgradeing later.