Tact 2.0S or Tact 2.2XP

I'm looking for a room correction device to cure the bass boom I'm getting in my room.
I've CD and Digital source(Bryston BDP-1) and have external DAC and pre-amp from Bryston.
I don't have any sub-woofer and don't want to use any in future.
It will be connected through digital interface so I don't need any add on cards ... basic unit will do.
But my question is what is the difference between 2.0S and 2.2XP other than sub-woofer connectivity and PC free setup in 2.2XP.
Shouldn't I get the auto room correction and Dynamic room correction features in 2.0S? What will be the problem without those features?
Please share your views.