I drop the mid and sub-bass a little between 60hz - 500hz then boost the upper mids, especially at 4k and treble at 8k, like you said to lift the veil, you can get them sounding crystal clear. It makes them nice, airy and I found the seperation improves, they'll grind out detail in the upper mids. It's just the stock Rockbox clip zip EQ frequency settings I adjust.
Damn they sound good now. They'll be harder to let go now