Also big named manufacturers don't need gimicky crap to sell their systems because they test properly and have standards for install to go by for best results.
Who uses SPDIF audio out in a vehicle? I mean honestly you use that for hi fidelity audio in a home theater or surround sound system not in car audio. If it is true fiber it is easily breakable when routing and if it is the plastic style fiber they get brittle and can crack pretty fast in...
