My settings in USB Audio Player Pro: External Audio DEvice (triggered by connecting a 3.5mm to 2.5mm balanced adapter), reduce amp by -3dB and Bit Perfect MQA. Playing on Noble K10, amazing sound from a second hand phone. Just make sure you delete all apps that are not for musing playing and deactivate all notifications for a blissful musical experience. The phone will also move faster and there's going to be plenty of room for your music . While you're in tweaking mode, disable screen animations, too. Turn that old fellow into an absolute audio beast!
An impedance adapter example below. Go for the 75 Ohm unit, it will always trigger High Impedance Mode and it won't ruin sound too much if you chose to leave it inserted.
https://www.aliexpress.com/item/DUN...3d-4927-a4b8-926e35cfd2c8&transAbTest=ae803_4
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