I appreciate your input and I’ve learned that treating a room is critical to good sound. I do have panels from vicoustics and gik on the walls. Have a look and tell me what you think. My room question was referring to the fact it’s not a great room really for a high end system being 2 story and open to other areas. I was wondering if there comes a point when continued upgrades would become fruitless because of the room.
My suggestion is, the next investment you make on your system should be on a spectrum analyzer software package, one that has a pre-calibrated microphone included. That way, you can do your analysis on the room and decide for yourself if you need to put more effort into room correction before you start spending on "last mile" items like power cords.
Believe it or not, the fact that your room is tall and open to other areas is a *benefit*, not a detriment. Phase cancellation from reflections happens because of proximity between reflective surfaces. The fewer parallel surfaces you have in your room, the fewer problems you'll have with the room negatively impacting your sound.
Trust me, it sucks a whole lot worse trying to correct a 12x12x8 square room than it does an open area like yours.