IPhone/IPad - why do I need camera adapter to connect to DAC?

Thank you for reply.

My question is “do I have to use Camera Adapter when I can directly connect iPhone to DAC by Lightning-USB A/B?”

From my basic understanding, less device, shorter case should sound better. So, using camera adapter (more device), so making the total sound travel distance longer(longer) seem counter-intuitive.

I thought that one of followings might be the reason.

1) due to certain Apple’s certain technical restriction, I can’t simply use a cable alone to bypass apple device’s internal DAC

or 

2) Camera Adapter has some sort of sound enhancing device.(?)

Have you tried connecting Apple device to external DAC without using Camera adapter?

In case of Dragonfly type DAC (Audioquest) I can see why I need a camera adapter simply to avoid error message. But in case of other self-powered external DAC, I do not understand why I need to go through camera adapter kind of external accesory.

Because Apple thinks you don't need it. 

If your DAC supports Apple AirPlay2 (like my Matrix Mini-i-3 Pro) use that wirelessly. I was surprised how well that works. I think the wireless maybe better because the noise of the phone is not directly connected to the DAC. I am not an expert in Apple crap but I am just using AirPlay2 temporarily until my DAC is ROON READY.

I think I will need a streamer. The DAC I happen to like it doesn’t have streaming function.

I like AirPlay2, and since I don’t have any better source than CD, the quality is just fine. 

I’ve been thinking about Roon, but simply doesn’t want to do any sort of subscription yet.

I believe the iPhone/iPad does not have enough electricity as a source. With the camera adapter the charging cable would support enough power to drive the iPhone.

When I connect the iPad to my Oppo 205, I use the Apple AV adaptor. Then use the HDMI cable plus the charging cable to make it work.