Factory Head Unit?AMP??

[amjaxpc]

I was wondering if the factory head unit has a preamp output on it or not? I am planning on putting in 4 Pioneer TS-A1665 6.5" 3-way 180w Speakers in all the doors and i was wondering if you guys would advise just hooking up a amp(with speaker level inputs unless the factory head has preamp out) to the factory HU, or if i should get a new head unit first and later on get a amp, what i should do? is there really that big of a difference between the quality of sound that the premium factory head gives out and that of a new head unit?
THANX AJ

 

[Robb]

There are no pre-amp RCAs on the stock HU. You can buy line level converters.

A new HU would be a great improvement of sound quality over stock.

I would save a little more and get a new aftermarket HU before getting started, but just replacing the speakers would help also.

Robb

 

[Hectanooga]

Tell me more about these line level converters. Do they go on the lines to the speakers? Do they render a speaker line inoperable?

Thanks
Eric

 

[kelly2]

they convert the speaker level to a preamp level
http://www.pac-audio.com/products/loc.htm