[Panther1]

I wanted to know if someone could help me to understand how to master effectively in protools, I want to get a more transparent session going? I produce HipHop /Trap music and work a lot with 808 bass beats and synths with snares. My stems come from presonus studio one and when using this system i lose transparency in the song after bouncing to disk the sound quality is changed to a lower volume in my basses and snares drums. All of the other instruments still sit in the mix correctly though(synths, rifts)!I am importing song tracks into pro-tools to master but am not sure as to which effects plugins to use. The stems that I am importing are wav files from my presonus sessions. I can master them in presonus but i want to try to master in Pro-tools because it is my favorite tool from most things. If someone has some ideas that can guide me in the right direction concerning then it would be appreciated. Thanks, panther1