If I was in any way skilled at writing prose I’d continue the alliteration in this post but alas I’m not so you’ll have to make do with the amazing ViPER4Android that makes Android devices sound absolutely amazing.
Their about page says that “ViPER’s Audio is an audio enhancing software to provide everyone with better audio experiences in various platforms such as smartphones and PCs.” It has a graphic equalizer and controls for changing surround sound, bass, treble, clarity and gain settings in the driver. I mostly used the default settings but pumped the clarity up to 12dB. There are different settings for headset, phone speaker, bluetooth and USB/dock. Music and voice sources sound so much richer, even through the phone speaker. I have yet to try the “sound of the kettle boiling” vs podcast test but hopefully it’ll help.
What first led me to try ViPER4Android was “Adapt Sound” on my Galaxy S4. The difference when using Samsung’s stock music player was like night and day. Unfortunately it didn’t change the sound out of any other player like Google’s Music Player. I needed an alternative.
You can download the apk file here. I installed the FX apk for the extra settings and installation is straightforward if your phone is rooted already. It may ask you to confirm a change to core configuration files that can cause damage. It warns you to make a backup first but I allowed it to do so and the phone rebooted without a hitch. I chose “Super Audio Quality” which the app warns might drain battery more quickly but I’m at home 99% of the time anyway so that’s not a major issue for me.
If you need further help, there’s some good illustrated installation instructions here.