Most recently, I got the firmware from the Walkman F800. And trying to port application from this player, but to no avail. But accidentally earned "Sound Enhancements". I am no expert on editing "layout" so this app looks bad.
Install this zip via CWM Recovery or TWRP. Make backup before installing.
Then you need after boot ROM clear data in Walkman app and Sound Enhancements
Apps > Walkman and Sound Enhancements > Clear Data
This zip contain special libs for work this EQ and also Google Music form F800
DSEE(Sound enhance) - Work very good on song with bitrate lover than 256 kbps
Clear Phase on Headphones
Matrix in VPT
Other things like stock 4.1 EQ
se_wm_v2.zip - 16.97 MB
se_wm.zip - 17.67 MB