Hey Recently I find out that Poweramp (v3)'s bluetooth output is not in tune, especially for vocal music(vitas opera 2). I use the original music player, and it work well. When I use line output and it also sounds fine. I use my old pad with Poweramp (582) and it still performs pretty good. I already reset all of the settings, but v3 still off key when the vocal part comes out. I don't know why.My device is Huawei Mate 20 pro with 9.0.