As of May 16 2019, Arylic have debugged all the problems that may cause inconvenient user experience with the Arylic A50 AMP.
1 - Fixed the volume tuner, making it easy to control the volume to a higher accuracy.
2 - Fixed the automatic USB plug-and-play.
3 - Fixed the automatic play for online music.
4 - Removed "Qingting FM"(a Chinese music service) from the“4STREAM” APP.
Any more problems or suggestions, your feedback is greatly appreciated. Please send all feedback to info@arylic.com