Empress Effects promises total control over your tone with heaps of features, including three parametric bands with 15dB ...

You can turn on the FX tab to tweak surround effects, deepen bass, and adjust channel balance. You can even select from 20 preset filters and create 10 custom profiles. RE Equalizer FX lets you ...

Boom: Bass Booster and Equalizer app is your companion ... The only limitation of Boom is that you cannot edit or set custom EQ settings on sounds that have DRM (Digital Music Rights) restrictions.