I don't think there is any decent EQ app for Android. I do not understand why that feature is not integrated into Android itself, to avoid latency and quality issues as much as possible...
I would object to the all-around good sound... the bass is overly emphasized in these cans. That is why I bought Audio-Technica ANC900BT instead recently - and THAT one has a very well balanced sound spectrum with no area emphasized over any other.