MacBook Pro (Retina, Late 2013): Using 192 kHz sample rate digital audio
Learn how to use 192 kHz sample rate optical digital audio with your MacBook Pro (Retina, Late 2013).
MacBook Pro (Retina, Late 2013) computers support up to a 192 kHz sample rate for audio playback when using the Toslink optical digital out port. To enable it, Select "192000.0 Hz” under the Format pop-up menu in Audio MIDI Setup.
The 192 kHz sample rate is not supported via the Toslink optical digital out port on earlier Mac computers. These have a maximum sample rate of 96 kHz.