[guido]

I am trying to play 192kHz FLACs into a Quattro Dac using the Toslink mini output from a new iMac.
 
It can only select up to 96kHz in the Audio Midi setup panel under "Built-in output" so the iMac must be downsampling to 96kHz
 
I am using Decibel to play the Flacs from the iMac.
 
How do I get a true 192kHz output on the Toslink?
 
I know the Quattro DAC only supports 96kHz on USB but it definitely supports 192 on the optical..

 

[log0]

I'm pretty sure the Mac cannot output 192kHz via the toslink.

 

[Loevhagen]

You're (unfortunately) right.