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Lightning to USB Camera Adapter + USB DAC: Supported Bit Depths/Sample Rates?

post #1 of 7
Thread Starter 

Hey all,

 

I've been reading a lot lately on a high-quality portable audio setup, and I've finally settled on using my iPhone 5S as the source, along with the Lightning to USB adapter and a JDS C5D DAC/amp combo. But I still haven't found this information: does the new digital audio out in iOS7 support rates as high as 24/96? I've seen people saying that they can get a DAC working with iOS7 but no reports of the actual suppported bit/sampe rates. 

 

I'm using the Beyerdynamic DT1350, and I know that I am not using them to their full potential without a dedicated external DAC and amplifier. But will there be much of a difference with these headphones between 16/44 and 24/96 with the audio formats that are supported by the iPhone? My reasoning for using the iPhone is that I do not want to lug around an additional audio player. If possible with this quality of playback, I'd like to stick with what I already carry around in my pocket.

 

Any comments would be greatly appreciated :bigsmile_face:.  I don't want to blow another $200 on more equipment if it's not the right choice. 

post #2 of 7
Thread Starter 

*bump*

post #3 of 7
check out Onkyo HF player
post #4 of 7

Some threads to check out:

 

http://www.head-fi.org/t/625493/ipad-with-24-bit-files-high-storage-capacity-portability-bit-perfect-configurations-that-work

 

http://www.head-fi.org/t/682222/ios7-iphone-and-apple-cck/

 

I think the current thinking is that the iPhone under iOS7 acts like the iPad always did with the appropriate CCK/Lightning-to-USB adapter, which supports at least 24/96.  I have seen ExpatInJapan show 16-bit/96kHz file playback, but that was without the CCK for DACs that support it.  Many of us are waiting on DAC manufacturers (Centrance) to update firmware, or Apple to make some changes to digital audio out on the source end to enable 24-bit playback at higher than 48kHz sampling rates much more easily and universally. 

post #5 of 7
On another thread one user confirmed that they had a dac that showed bit rates on the display and that they were seeing 24 bit 96 kHz using ios 7 and the cck.

There is a theory that Apple will move to support high bit rate audio as they have discussed adding high bit rate files to the store. All conjecture at this point.

I do not personally give Apple benefit of doubt on hifi issues. They crippled dd5.1 with netflix on their latest update for Apple TV.
So the have zero cred with me on these matters.
Edited by originalsnuffy - 5/25/14 at 6:42pm
post #6 of 7
Thread Starter 

Thanks for the input and the link to that huge thread, I must have missed that one. I'm thinking I'll create a Google Docs spreadsheet or something with a listing of unofficial compatible DACs that users have tested with the Lightning to USB adapter. I may just wait for iOS8 too before buying any hardware. It looks like you can have 24/48 playback on the iPhone with a third-party app. 

post #7 of 7

There are many apps that output from the iphone to the various ios compatible DAC units.  My E07 has a max of 24 bit / 96 .

My favorite apps is nPlayer as it streams well from my home server in hi res.  

 

I use my iphone solution very little now that I have the fiio X3.

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