[paolo]

MAlby7,Dec 17 2006, 08:55 PM Wrote:OOOHHHHHHHHHHH that makes everything more clear now.  You just want to add a sub to your stock setup. 

As far as hooking an amp up tp the stock 2000-2004 headunits, It's a little more difficult.  A power wire is run from the battery and I believe you need to get a signal from the rear speakers for the amp.

The problem with doing this (or at least what I found when I added a sub to the stock system) is that the sub overpowers the stock speakers so all you get is bass.
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He said in his initial post he has the mp3 deck. There is more than one version of this deck so to be sure, if it is infact the one made by blaupunkt, then yes you can easily hook an amp up to the stock deck. You will need the blaupunk adaptor to enable RCA outs from the deck... I happened to have one that I made for my VW deck a few yrs back and it works just fine. The deck itself has a very good EQ since this deck was available overseas too, people over in europe have enabled the hidden menu to change the EQ settings to compensate the levels for when you hook up a system or in your case a sub and amp to it. It should be just fine, I have the same deck that your talking about too. You do NOT need an Line level a.k.a. RCA converter to use this deck with an amp.