是不是USB-C转闪电线不支持音频传输只支持充电和数据传输？

亲们，有个问题想咨询一下大家，是不是USB-C转闪电线不支持音频传输只支持充电和数据传输？抑或是这是第二代少了针脚的缘故？

背景是，我买了一只支持USB-C音频输入的无线耳机，当我用双头USB-C线的时候，无论是新iPad Pro还是MacBook都没有问题，显然这并不是iOS不支持；而当我用USB-C转闪电连接线插上iPhone Xs Max的时候，手机就死都无法识别它为耳机，毫无反应。

我的疑虑就在于是不是线本身的限制问题，还是有别的功能需要手动开启？

非常感谢大家的帮助，毕竟蓝牙是方便，但是你总得需要额外的选项当你想听更高音质的音乐的时候。

Hi all,

I've got a concern on the cable of lightning to USB-C when using audio transfer, does anyone know whether it supports only charging and data transferring? or because it's the second generation with lower price and less pins, the first generation should've supported.

The background is, I've bought a B&W PX headphone, which supports USB-C audio input. And I used Apple's dual USB-C cable (slimmer one for iPad not for MacBook) and found the 11" iPad Pro is able to recognise it as headphone, so it can tell iOS supports this method; when I plug in to the iPhone Xs Max with USB-C to Lightning cable, the iPhone couldn't recognise it by all means, seems like nothing ever happened.

I've been wondering, if the USB-C to Lightning cable only support power delivery and data transferring though? Alternatively, there should be some function I should've manually switched on?

Anyone's help would be much appreciated, since I really wish to take alternatives to listen to music rather than bluetooth.

Best

Issac