HACKER Q&A
📣 sirwitti

Why was Usb Audio Support Removed in Android 9?


Since Android Pie/9 the support for AOAv2 which enables using usb audio devices we removed from Android (see https://source.android.com/compatibility/10/android-10-cdd).

Why is it that highly useful features like this are removed without any explanation, workaround or alternative solutions?

On iOs you can use external sound cards for music production or using your car stereo if it does not support Bluetooth.

Anybody on a relevant Google team care to comment? Thanks!

  👤 detaro Accepted Answer ✓
If search for "usb audio" in your link, the first hit is

> If Handheld device implementations include a USB port supporting host mode, they:

[7.7.2/H-1-1] MUST implement the USB audio class as documented in the Android SDK documentation.

?

👤 gaspoweredcat
i havent heard anything about this being removed and doing so doesnt make sense in a world where there are devices which come with no headphone port

i can go a little bit further too and say my phone actually runs Android 9 and i use a USB audio device almost daily with it (Xperia XZ1 Compact with Audeze Mobius via USB-C)