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Audio Delay on iMac USB vs. Digital Outputs?

From my iMac, to DAC, via USB, the audio signal is delayed approx. 3 seconds vs the digital output (TOSLINK®-to-Optical Mini Plug Digital Cable) to the same DAC.

I have an M2Tech HiFace plugged in the USB out from the iMac and to DAC using an S/PDIF cable.

Contacted M2Tech regarding the audio delay and their reply "HiFace can not delay the output of the sound signal. The problem must be found on the player or the computer configuration used."

If the issue is computer configuration, any suggestions to fix and remove delay?
stevensctt

Showing 4 responses by stevensctt

stevensctt OP
65 posts
 
Most annoying problem is that I have two other systems at home and often run them all at once, from the same source. One out of sync system is not good.

Secondly, video/audio from the iMac are out of sync, basically unwatchable.

Despite the response form M2Tech, I've been informed elsewhere that this is a problem with OSX drivers and not an issue with Windows.
stevensctt OP
65 posts
 
Thanks for that info. Wish I knew that before purchasing the HiFace. I can tell you that the delay is greater than a fraction of a second! I'll send the link to customer service adviser at M2Tech.

Too bad as the HiFace is a very nice device.
stevensctt OP
65 posts
 
Installing Windows on my iMac is probably not something I will do.
stevensctt OP
65 posts
 
Herman -- No Apple snob!:)

Installing Windows may be something to look into after doing a little research. Not sure I would do specifically to use the HiFace.
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