I will ask the questions because I just do not know the answers.
-Does anyone know where the sound shaping for the Sony system takes place? Is the DSP in the head unit or in the amplifier?
-Can you hook up aftermarket amps before the audio signal passes through Sony amplifier?
I believe what we would normally think of as a head unit is nothing more than a user interface. On my 13 is seems connected to the amp/dsp via a digital bus. I'm finishing up vacation but ill look in my shop manual again when I get home Tuesday.
Even when I just wanted to only hook up subs, the factory subs I thought were crossed over too low, and the rear doors are set to HPF. So for me, only the fronts would work, so I could cross them over where I wanted at the amp.
My initial upgrade plans was as you guys spoke. But with this, since I don't have navigation, it can now be a part of the stereo. Now a whole slew of head units open up. And, all climate controls become touch screen operated.
