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- Nov 11, 2004
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aha, that does help, thanks
Apparently I'm the last to hear about ios7 giving iPhones the ability to give digital out via the CCK. I so stoked!
Hooked up my lightning to USB cck from my iPad air to ibasso db2/pb2 and it worked as expected. On a whim I hooked up the iPhone 5s and wham...sound!! So pleased to be able to get the phone as source when I need small and portable rather than just the iPad.
Thanks Apple for finally getting this right!
So I just now plugged my IP5s into my cars Alpine cde-hd148bt head unit which has USB input and it predates the IP5s and iOS7. Audio works over USB and it's obviously digital. And I'm sure it will work with a 30pin cable. I'm NOT using a CCK.
How is this working? What kind of handshaking is going on? Why do USB DACs need the CCK?
Edit: whatever protocol it's using is obviously digital (lighting connector had no analog pins, also iphone volume is disabled) and it also supports remote track forward/backward, play/pause and track info. Those are all great things to have for any DAC. I'm not sure if USB audio 1 or 2 supports those things like track control and metadata.
This is weird. According to everything that's gone before, it shouldn't work. After reading this I tried my up-to-date Touch 5 with two DACs that had worked with the CCK. Without the CCK, going Touch>Lighning USB cable>USB female/micro USB male adapter>DAC didn't work with either DAC. I have no idea why your setup works...
Well, guys, I got my iBasso D12 today, and it works great! Granted, you have to run it through the CCK and a hub to avoid the "too much power" buzzkill, but I think I've found a way around all that cumbersome stuff. I managed to find a tiny aluminum project box on Amazon, and I crammed a CCK, tiny unpowered Belkin hub, and 3 feet of mini-USB cable in there. I drilled some holes (and stuck some grommets in) and voilá! Now it's all contained in a tiny package without any errant cables. As for the D12, it's a perfectly simple affair. Plug it in and go. No weird volume problems like the Fiio E17, and it sounds terrific with my Mad dogs.
Here's a look inside the box. I wanted to find a shorter cable, but I also needed it to be a left-hand right-angle mini-USB cable. Not the easiest thing in the world to get ahold of, and 3' seemed to be the shortest anyone makes. It looks a mess, but it works great.
Well the Alpine head unit isn't a true 'desktop' USB DAC I think. There might be some proprietary Apple protocols at play but all my searching hasn't turned up whats really going on.
While anything is possible from Apple, it would make little sense to disable UAC1 now that it’s been enabled and manufactures like us have leveraged its functionality. Consumers have been pushing Apple and Google for UAC1 support for a few years. We trust that Apple will keep UAC1 in future iOS releases.