I am happy to see someone is trying to use c.a.p.s in a High end car audio system
unfortunately , it is not good in car environment. we use c.a.p.s as digital output , dsp RPM88 amp brax mx4 dynaudio e110 at18h ,almost the best of the car equipment. compare with ODR3 ,c.a.p.s+dsp still need someting