It would seem that the pulseaudio equalizer module is available on Trusty:
$ dpkg -L pulseaudio | grep eq /usr/lib/pulse-4.0/modules/module-equalizer-sink.so
It would seem that the pulseaudio equalizer module is available on Trusty:
$ dpkg -L pulseaudio | grep eq pulse-4. 0/modules/ module- equalizer- sink.so
/usr/lib/