I have a Beyerdynamic DT770 headphones and I'm using the 3.5 mm stereo cable to hook up to my motherboard. I noticed that my motherboard has both the green 3.5 mm sound output and an optical audio output. Currently I'm using the 3.5 mm output but I'm wondering if the optical audio will produce a better sound? My headphones use a 3.5 mm cable so I would have to adapt it for the optical audio. What are your thoughts on this?