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In Reply to: RE: Windows or Apple for 2014/15? posted by Mercman on September 16, 2014 at 07:49:48
Steve,
"EXACTLY"! I am living with "drop outs" when using my Auralic Vega in it's MUST USE setting, the EXACT clock setting. Of course this is via my previously mentioned Mac-Mini using the latest (but not modified) OSX.
I really could use a more complete description of what needs to be done to, or with my OSX to eliminate the Drop Out issue with my Vega DAC in it's Exact clock setting.
Thank you a bunch for your help here.
Lance A.
Follow Ups:
the most common issue with ability to lock on securely between dac and source is due to misalignment of clock rates. For best performance good dacs can have a narrow lock range of perhaps 200 ppm or less. If this is exceeded due to poor clock source stability, thermal, or other reasons, then you have interruptions. If your dac performs without issues when set to the 'wide' clocking range, then this will be the issue.
HiFiWorld had tested Mac Mini digital outputs and found that the older models were 'poor' compared to the latest generation.
I am posting in the general sense as I have no idea what your settings and setup are.
I've owned six ASYNC DACs over the years and none of them had audio 'drop-outs' on my Mac, even w/o OS 'optimizations'.
Be sure that the DAC is on it's own HighSpeed USB 2.0 bus not shared with other devices. Additionally, do not place it on the USB 3.0 SuperSpeed bus.
Mac System Report will show you the USB Device Tree:
Applications -> Utilities -> System Information
The info that Ayre provides should help and it's linked below. Note that the System Report in the screen shot above from Ayre does not show USB 3.0 SuperSpeed because USB 3.0 was not implemented in most computers when Ayre posted their instructions.
You could try this script, but read the info carefully. I would also perform a time machine back-up before applying this script if things get permanently corrupted.
Edits: 09/18/14 09/18/14
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