To enable Equalizer with Poweramp player, DVC should be disabled in the player and MusicFX should be enabled:
- enable MusicFX in Poweramp (search in settings)
- switch MusicFX on on 2nd Poweramp player equalizer tab
- then next track should be picked up by Equalizer app
It's recommended to disable equalizer in Poweramp player as double equalization is not improving the quality and easily causes overload.