If you are an audiophile who loves equalizers and audio apps then the new Viper4Android Audio Effects App is probably for you. V4A makes great improvements in BASS along with many other enhancements. V4A includes a dynamic bass system with Viper Bass, Clarity with Viper Clarity, surround with field surround, and virtual headphone surround. Some other features of this app include Auditory Calibration, Auditory system protection with Cure tech+, convolover, In app installation which will help you to set everything up, FX compatibility mode, and a new Safe mode. This app will work on any rooted device up to version 4.2.2. Viper is currently working on an update to support Android version 4.3. Grab this app from the source link below.