I've been struggling pretty bad trying to find a match of USB audio and a DDC (USB to Optical Converter to JL D8 DSP). Not sure if the DDC is causing any issues. Works fine on the home theater and on ipads.
So after battling with my samsung tablet (TAB 8 A 2018) and Pixel 3, I decided to buy an old nexus 7 2013.
I loaded Lin 14.1 and Elementalx Kernal on the Nexus and the OTG+Charge is working now. The main issue is when I turn my vehicle off, the Nexus will not resume usb audio. I have to unplug it 50 times, restart it, and other things, and it will finally start working again. It did this on the stock ROM as well, but it was worse.
If I plug in any type of usb hub, It rarely will ever play usb audio again. That's on every android device I've tried.
What roms are you guys using?
I got a aptx HD BT receiver, sounds pretty decent with the pixel 3, but the usb audio is so much cleaner when it works.