I have a macbook pro 13 and I haven't seen that option in the preference. I also realized that the knew update fiddles with the optic out and many peoples optic outs aren't working. I need to wait until the next update or downgrade back to use optic out.
Quote:
Originally Posted by pro555 
I just played the setting around, I found out when I set the default playback to S/PDIF, the volume is lower but the sound quality is even improved! At this setting, I have to set the gain to High. If you didn't know this already, I recommend you set the S/PDIF as default playback on you computer for the external DAC.
