Just been out shopping for new headphones. However, every single pair I tried with my phone became very distorted when I turned up the volume, even the very expensive ones. All my music on my phone is at least 256 kbps. The distortion disappears if I change the EQ settings to Treble Booster, but this obviously means I don't get much bass. All of the music in my library has volume adjustment set to maximum. Could this be the problem?