The dongle has arrived, but I have the uneasy feeling that it doesn't use all the USB audio functions, which may be due to the smartphone.
In any case, Amazon Music only outputs SD and not Ultra HD, as with the WiiM Ultra, for example.
In addition, there is sometimes an unpleasant, irregular crackling sound, like a speck of dust on a vinyl record
Everything is enabled for USB audio in the developer options.
Does anyone have any ideas or an additional app?
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