Originally Posted by ian310567
. . . .
Bob - in response to one of my previous posts, you mentioned that you had done some testing with a Mac, are you now able to discuss your findings further?
I actually mentioned it as part of one of my posts above when the 105 specs came out, but in the flurry of posts it was certainly easy to miss.
Use of the 105's USB DAC Digital Audio Input is "plug and play" on the Mac using Mac OS X 10.8.2. This is likely true for older MAC OS X versions as well but I've not tried them.
You will need a USB cable that has the appropriate style plug at each end -- the Asynchronous USB port on the 105 uses the squarer shape plug to avoid confusion with the thinner rectangular shape plugs used for attaching hard drives to the player's USB 2.0 ports.
Once cabled, the Mac automatically sees the 105 as a new Sound Output device. There is no driver to load, or any other shenanigans to go through. All you need to do is go to the System Preferences > Sound pane and select the OPPO as your choice for audio output -- the same way you would select between the Mac's internal speakers and a networked AirPlay device for example. Quite a few applications that generate audio (e.g., iTunes) include an icon which will let you make that choice in the application itself. For iTunes the icon is in the lower right corner of the window.
Basically, if you can get the audio to play on the Mac's own speakers, then you can get it to play through the 105. What gets sent over the USB cable is 2.0 LPCM 192KHz 24-bit. How your audio source gets turned into that depends on the application you are using to play the audio.
On the 105, you press the Input button and select the USB DAC Input. The incoming audio is available on both the Analog and the Digital Audio outputs of the 105 simultaneously.
In my testing it sounds as good as you would expect, both for Analog and HDMI Digital audio output.