What I got here is a working DSP Manager for 4.3 Jelly Bean.
Its a flashable zip that will add the correct files in system folder for the app to work
Note:This Zip Will Delete MusicFX.apk And Replaces It With DSPManager.apk
Confirmed and tested working:
Nexus 7 (2013)
It should also work for other 4.3 Roms
1. Download Attached File http://forum.xda-developers.com/atta...1&d=1375933426
2. Copy Into Your Phones SdCard
3. Reboot/Boot Into Recovery (CWM/TWRP)
4. Flash DSP.zip
5. Wipe Cache, Davik Cache and Fix Permission
Updated Libs to latest CM Source
DSP Manager v2.0
All credits and thanks goes to the Cyanogenmod Team for creating this wonderful app!!