Can Room Correction Be Added to an Existing DAC?

  This is probably a stupid question, and I’ve been  hesitant to ask it since it will reveal the depth of my ignorance, but here goes.
  In my home I have 3 systems.  2 are HT systems with mid Fi equipment, then my two channel system is upstairs (my HE system).  I had added an Anthem AvVR to one of the HT systems and was duly impressed.  I added the same AVR to my basement system a few weeks ago and now I am blown away.  I am wondering what room correction could do in my main system.  However, I already have Bryston DAC3 in that system that I really like.  So my question is whether it’s possible to apply RC after the processing done in the DAC .  My intuition is Probably Not, since the RC is also processing the signal.