I like the speaker boost from viper4android but have noticed most of the difference from extreme beat's. The beta viper4android I didn't use too long as I wanted to check out the Tesla ROM which has viper4android built in but you still have to install the driver after flashing. I haven't used any of them on headphones yet. Hope this helps you decide better.How big of a difference would you say you notice in audio quality when comparing viper4android beta and the regular DSP manager? Viper4android vs viper4android and extreme beats?
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