Clarification on car Audio?

[JibuJ]

I'm planning to buy a 2din player for my car and im intrested in Kenwood DDX4038. But from th ecatalogue I found only pre-out for this system. Do i ned to buy amplifier to conect to the speaker?

 

[Reuben]

The proper specs for that head unit are at http://au.kenwood.com/Car_Entertainment/Visual_n_Navigation_Systems/DDX4038

They show that the head unit does indeed have 2x pre-outs @ 4volts each, but, it also states that it has 50watts x4 for your normal speakers.

So, to answer your question, no you will not need an amplifier to run your speakers!
It will have the normal connections to wire your speakers into.