UPDATED on 15 January 2015 - to incorporate changes that now allow the HA-2 to support Hi-Res files from iDevices without the need for a CCK (Camera Connection Kit)
zilchmod,
So if you want 24/96 audio from an iPhone into HA2, you would connect Apple Lightning CCK cable to iPhone, and then a regular USB cable from CCK into HA2?
Thanks for confirming,
Short Answer:
Yes, but you would connect the USB cable to the HA-2's USB Micro B female jack (labeled "B") - not to the HA-2's USB A female jack (labeled "A").
Long Answer:
If you are using a CCK with an iDevice, you are effectively converting the iDevice into a USB source, identical to the signal taken from a Windows PC or Mac machine's USB port - for use with a DAC that has a USB receiver. And thus, you would have to connect the CCK to a USB cable (or adapter) and then to the Micro B USB jack (labeled with a "B" - out of focus - in the image above.)
UPDATED on 15 January 2015: The HA-2 now supports the playing of Hi-Res files from Apple iDevices without the use of a CCK - just plug your iDevice into the USB A port and enjoy!
Similarly...
If you are using a Sony WMC-NWH10 cable with a Sony Walkman, you are effectively converting the Walkman into a USB source, identical to the signal taken from a Windows PC or Mac machine's USB ports - for use with a DAC that has a USB receiver. And thus, you would have to connect the WMC-NWH10 cable to a USB cable (or adapter) and then to the Micro B USB jack (labeled with a "B" - out of focus in the image above.)
That USB Micro B jack (labeled "B") on the HA-2 really only supports two kinds of signals: Android and USB. The HA-2 has the ability to detect whether it is seeing an Android device or a USB source. And thus, that jack supports the Sony Walkman NWZ-A17, for example, only through use of the Sony WMC-NWH10 cable - that converts its digital signal to USB format. And... that jack supports Apple iDevices only through use of the CCK - that converts its digital signal to USB format.
Either of these solutions will support PCM rates all the way up to 384 kHz as well as DSD - as long as you have a player app that supports those rates and the appropriate cable to emulate a USB source:
Apple Lightning CCK: http://store.apple.com/us/product/MD821ZM/A/lightning-to-usb-camera-adapter
Sony WMC-NWH10: http://www.amazon.com/Sony-WMC-NWH10-Conversion-Cable-Output/dp/B00FF086HE
UPDATED on 15 January 2015: The HA-2 now supports the playing of Hi-Res files from Apple iDevices without the use of a CCK - just plug your iDevice into the USB A port and enjoy!
To play Hi-Res files on iDevices, some of the HA-2 Beta testers have been using an App called
Onkyo HF Player, available from the App Store, as described here: https://itunes.apple.com/us/app/onkyo-hf-player/id704139896
Others are using the App called
Accudio, also available from the App Store, as described here:
https://itunes.apple.com/us/app/accudio-free/id551297705
If you are not interested in supporting playback of Hi-Res files from an iDevice, you can use either a 30-pin-to-USB-A cable (for the older iDevices) or a Lightning-to-USB-A cable. Either of these cables would be plugged into the USB A female jack of the HA-2 (labeled "A"), as indicated in the annotated photo above, but until further notice, this direct connection to iDevices will not support resolutions higher than 48-kHz/16-bit - this is an Apple limitation, not an OPPO limitation.
UPDATED on 15 January 2015: The HA-2 now supports the playing of Hi-Res files from Apple iDevices without the use of a CCK - just plug your iDevice into the USB A port and enjoy!
I'm not sure what rates are possible using Android devices and apps written for Android, but they must use the USB Micro B jack (labeled "B").
For all sources, if you are willing to use their internal DACs, you can take a Line Out from the source device to the 3.5mm Line In jack that's on top of the HA-2, selecting "C" with the source selection switch. This will bypass the HA-2's ESS9018M2 DAC, but allow use of its amp section.
By the way, the HA-2 can charge an iDevice while playing - whether using the "A" jack (low-res) or the "B" jack (hi-res, via CCK).
Mike