The smallest EQ you can get. Download is 14kb, installed 16kb
No ads, no popups, just the Equalizer itself at 14kb to boost the bass, increase the volume of certain frequencies and improve the overall sound quality.
MOTOROLA ANDROID 5 NOTE: I've had several people contacting me about the app not adjusting any sound at all, I don't own any Motorola devices so I couldn't investigate this one my own yet. I tried a couple of other equalizer apps on a friends' Moto G and none of them seemed to works so it appears to be a global issue.
I hope we will find a way to get around this, stay tuned.
Project based on http://kevinboone.net/android_simple_eq.html uploaded with his consent.