OceanOfLight
Head-Fier
I’m sorry to hear that. I really hope FiiO will identify the problem and address it for everyone.Forgot to say, my settings are the same as yours, and I also tried changing some before, but that didn't help.
In the meantime, may I suggest that you use the BTR15 in High Gain mode at a lower volume? I believe it would be safer. Thanks to this bug, I’ve accidentally blasted my ears many more times than I’m willing to admit.