[Q] How to increse earphone sound in S3 without kernels ? topic

Hi!, first of all sorry bad english (not main language)

So, I have a Galaxy S3 and I use Poweramp to listen music but, a few days ago the sound on the earphones appears to get lower and lower (if I listen the same song in the samsung player, the music is louder than in Poweramp).
So I wanna know if there's a way to increase sound on the earphones without changing the kernel... (the last time I've done that, i lost IMEI)