Enabling Equalizer / Dolby surround when in Bluetooth h'set.

[Glmer Badua]

How to enable equalizer and dolby surround when in bluetooth connection? Lumia 930 running dot107 update here. I'm using Jabra Rox wireless,...no sound app for windows mobile. Tried to d/load other equalizer app available on store but still equalizer disabled. Is it something related to phone audio device compatibility or OS restriction?