EQ+: Equalizer & Bass Booster is a free multimedia app developed by Lean StartApp for Android devices. It is designed to enhance the sound quality of your music, audiobooks, games, and videos. With this app, you can adjust the sound effect levels for your phone speakers and headphones. The app offers various built-in presets for equalizations, bass booster, virtualizer booster, and volume booster, allowing you to customize and name your unique sound effect.

The app also features a 3D virtualizer that produces quality sound in a digital surround support, enhancing the stereo effect. You can use the app to control music playback, display the song title and artist, and easily switch on/off EQ+: Equalizer & Bass Booster from the notification bar. The app is compatible with wired and Bluetooth headphones, internal and external speakers, and supports equalizer and bass boost for popular music apps like Spotify, YouTube, Google Music, SoundCloud, and more.

In summary, if you're looking for an easy-to-use equalizer and bass booster app that doesn't require root access, EQ+: Equalizer & Bass Booster is worth trying out.