I'd like to know about that as well. this topics been more than 2 years old and no one with a clue (who is not guessing) or developer cared to elaborate on this. Im wondering if voodoo and DVC of Poweramp are compatible as well (guess this mainly concerns voodoos DAC direct feature). as it seems, activating DVC is needed in order to have poweramps replay gain function working (at least in combination with voodoo active). and in case of activating DVC, I can still deactivate the equalizer button which automatically gets activated with that, right? Does DVC somewhat alter the sound quality? or remove the improvements done via voodoo again? some clarification would be nice, Im looking for the best possible audio quality, with and without replaygain active.