Well I think I figured it out, the ssl mic compressor really brightens up the signal with the bottom left untouched infact beefed up somewhat. I had this compressor for ages I just never used it on aux and the one time I used it was on master signal and I thought it cut the bottom end big time so I never used it again lol.
Thing is most of comp and eq's I tried on aux introduced phase, even some chorus/reverbs I think so I kinda like to avoid aux for those reasons.