I'm having this exact same issue.
There is right audio, but its very faint. Its only on bluetooth, headset is fine and its only on the Poweramp app.
It does it on my home speaker and in the car.
On Google player everything is OK.
I have reset all settings, I have uninstalled and re-installed, and its the same.
It wasn't always this way. It had been working fine for years and one day just started behaving like this.
Any help or advice would be greatly appreciated.
EDIT: I found the LR dial was off in my settings. I dont remember changing it. It was probably done by accident.
