I have audio file with 192Khz/24bit sound, and Revo 5.1 and driver for Snow Leopard. This driver is not official, and it is only the kext, without any GUI, and I can't see sound quality playing right now. I just set up in Audio Midi Setup App sound format of 192Khz. How can I see be sure the sound playing in 192/24 quality, not just 192/16? Is 24bit/16bit sound switching begins automatically?
Playing Hi-Res audio files on mac with M-audio Revolution 5.1
audiomusic
Related Solutions
I saw the chatter over on the official Apple forums last week and there has been some success on Retina MBP owners with the workaround here (and listed below)
Go to System Preferences -> Energy Saver -> Uncheck 'Automatic Graphics Switching'
This will of course switch 100% to the Nvidia chipset which will be a larger battery drain.
The issue, according to those users, is that the integrated graphics on the Retina MBP is the root cause and more than likely to be as a result of immature drivers from Intel since they also report that there is no issue under Bootcamp.
If you alt-click on the speaker icon in your toolbar you can select output and input devices.
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Best Answer
I used to own one of these cards and used it on a Windows PC. If I'm not mistaken, M-Audio (now owned by Avid) no longer supports this card. It's been declared obsolete and orphaned. Good luck.