V2.3.2 works well on my iPhone and iPad Air. Gives great sound quality for this level app. A pro level parametric EQ would be the next step.
Only issue I have is on the iPad. Presets cannot be saved. Name box pops up then disappears. Virtual keyboard comes up and locks open. Will not disengage without closing down the app. Does not do this on the iPhone.
Kawx4d about EQu - the quality equalizer, v2.3.2