<div class="tab-content-content">Extra Volume Booster Equalizer is a free app that allows users to boost the volume of their phone or tablet's audio output. It features a music equalizer with different sound levels and frequencies, as well as treble and bass controls. The app also includes a sound booster for headphones, external speakers, and Bluetooth devices, as well as stereo surround sound effects and a 3D virtualizer effect. The interface is simple and user-friendly, and no root access is required to use the app.</div><div class="tab-content-content"></div><div class="tab-content-content">The app is useful for a variety of audio and video applications, including music, audio books, videos, and games. Users can adjust the sound level and frequency to their liking, and the app can run in the background while other apps are in use. The app also includes a bass booster feature that enhances the bass volume when used with headphones.</div><div class="tab-content-content"></div><div class="tab-content-content">Overall, Extra Volume Booster Equalizer is a great app for anyone looking to boost the volume and quality of their phone or tablet's audio output. It is easy to use and offers a range of features that can enhance the listening experience for music, videos, and games.</div><div class="tab-content-content"></div><div class="tab-content-content">If you're looking for an easy way to boost the volume and quality of your phone or tablet's audio output, look no further than Extra Volume Booster Equalizer. With its simple interface and range of features, this app is sure to enhance your listening experience and provide hours of entertainment.</div>