There's a DSP Manager in the play store but it's not the same thing and doesn't provide the same functionality.
I tried just copying over and installing the APK from the CM11 package (http://forum.xda-developers.com/show....php?t=2595464) - it'll install and run but none of the settings have any effect so I uninstalled it.
Turns out this is the proper package to install : http://forum.xda-developers.com/show....php?t=2393138
I flashed it in stock (3e) recovery and it gave a message saying "signature verification failed" (or similar) but continued on to say installation successful, followed by rebooting, but afterwards, there is no DSPmanager app that I can find.
Do I need CWM or something else? Will it trip the KNOX flag?