The benefits of DSP Manager and Jetaudio for android?
See, just now I listened to the Sony MH1-C on my Sansa Clip+ with Fiio E5 amp set to bass boost. I set the bass on the Clip+ to 10 out of 20. The bass sounded flat relative to my Cyanogenmod setup it's crazy.
In Cyanogenmod (with DSP Manager and Jetaudio) the bass sound transforms into something so powerful and beautiful and full without compromising the mids and highs. You really have to try it to experience it; it's only a matter of rooting your phone to Cyanogenmod and getting Jetaudio, but only if you don't care about your phone's warranty? But DSP Manager can run on ANY android phone so yeah. I only rooted my old LG P500 for use as a dedicated mp3 player and it beat my Cowon iAudio U3. I swear if you're not a basshead the bass transformation is something that you have to hear for yourself.
The programmer for DSP Manager wrote a brief explanation of its uses here. But the most striking thing is that its Bass Boost setting is unlike any bass boost setting I've heard ever. Even the Fiio E5 can't transform bass like that.