I have dirty flashed lineage-20.0-20230322-UNOFFICIAL and now the V1 updated. Working fine so far.
My tablet has a new life as a music server. I have it connected to an external SMSL SU9 DAC and I have USB Audio Player Pro installed (a paid app). USB Audio Player is a wrapper around my Qobuz streaming account which bypasses all Android audio processing and sends the digital stream directly to the USB attached DAC. It works beautifully and you can watch the display on the DAC change as the playing tracks have different sampling rates. HiRes 24 bit FLAC files with rates from 44.1 to 192 kHz. So my MiPad 4 8" LTE device with this ROM is able to drive it all effortlessly. I have not run it long enough to see what happens to battery life, but for this use it does not really matter.
EDIT: This setup will work with a $10 USB-C to headphone jack adaptor that has an inbuilt DAC. You do not get any displays but the principle is the same. One like this Kinsound works fine. I have tried it. 32 bit up to 384 kHz.
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