Listening at maximum volume, which isn't something I'd usually do or recommend, does lead to accentuated vocals and mid-tones while listening to music.
Not exact matches
However,
listening to Michael Jackson's «The Lady In My Life,» I noticed that while the artist's vocal was clear, the guitar sounded distorted
at maximum volume, as did the keyboard.
Ideally, earphones get quite loud
at maximum volume, so you can
listen comfortably
at a lower level and have room to adjust.