Alpine makes a DSP as well as an auxilary controller if you don't have one of their top of the line headunits. Works perfect for a carputer.
Has 3 digital optical inputs, as well as a standard stereo analog input.......plus the AI-Net stuff. Has 2 sets of front outputs, 1 set of rear, 1 center (can be switched to a 2nd sub out) and 1 sub out.
Awesome unit I've had zero problems with it and the features are amazing. Control unit is a standard din sized face plate that you can mount anywhere
here's a picture of the processor:
http://www.expertwebcreations.com/pe.../processor.jpg
here's a pic of the control unit:
http://www.expertwebcreations.com/pe...oller_dark.jpg
Model numbers are:
PXA-H701 (processor)
RUX-C701 (control unit)
This is the newest Alpine unit, they make others with similiar features that are a lot cheaper - check out ebay.