Can I stack Liquid Masterdrol and 6-OXO? I see that 6-OXO is used as a PCT usually but does that mean it has to be?

Also I got an "Anabolic Amplifier" Scifits DHB...anyone used it? Should it be used with Liquid Masterdrol? Because ive heard that the enzymes in your body actually helps the LM.

Any help would be great thanks!