Greetings

As I am moving to quite a high end car audio project, now thinking to switch my actual source (alpine INA W910R) to a car pc, I have one question..

I want to keep my alpine H800 processor, it make sense for me. But what is the best way to attack this processor, with in mind only SQ audio, 3 way front + sub...

Either I go optical/coaxial out from the car pc, or I drop an USB dac and got analog in the H800....

SQ wise, what is the best road?