@maxmp I didn't precise it, but when the sample rate resets itself to 48 khz (for instance, when Poweramp is not playing any sound, working in background and then used again), the volume also automatically and drastically increases and decreases up until I pick another sample rate in the app.
Sometimes, when I forget about it and I'm using my headphones, it catches me by surprise and hurts my ears. Please, could you do something about this? It's really irritating.