> I'd also add the advice of my father, who is a sound engineer with over forty
> years experience:
>
> Turn it up.
>
> Get a good pair of speakers or headphones and turn them up to the loudest you
> feel comfortable with. Work at that volume for about half an hour; then rest
> your ears for fifteen minutes (that way your ears don't get used to the noise
> and dull it down). Editing at quieter volumes will mean you hear more of the
> treble, overcompensate by turning up the bass, and then wreck your mix.
>

learning about the fletcher-munsen curve could be helpful too