I used to put my Behringer before my tube pre-amp, that way the ss DEQ didn't mess with the "magic" tube pre/ss amp sound.
If you run the Behringer's room correction, it's correcting what comes out of the speakers. It shouldn't matter where it is in the path.
If you run the Behringer's room correction, it's correcting what comes out of the speakers. It shouldn't matter where it is in the path.