You can apply equalizer settings to one or multiple tracks already.
Select all tracks of an album, right-click > edit > Settings Tab > equaliser preset > select one from the dropdown-list
Your own created presets will show up in the list as well.
To create your own presets, just open the equaliser, adjust the settings to your needs and click "Save Preset". Then restart MusicBee and it will be available in the dropdown-list.
EDIT: sorry, I typed too slow
Bee-liever was faster