Most music is mastered at “reference level” meaning around 85db c weighted, if you are significant below that the tonal balance of the music isn’t correct anymore due to the equal loudness curves of our hearing; meaning that if you listen at lower sound levels the earphone should have significant more bass and highs to compensate for lack of volume; meaning how we perceive the level of bass and treble is not the same at different sound levels. It thus has nothing to do with blasting your ears but more with not listening at proper reference volumes and thus potentially misjudging the device under test.