Room correction - what device works best?

Thank you very much everyone - very helpful information. I would have gotten back but I was enjoying music all day through my new speakers! I did have a long talk with Tim at SimpliFi about the DSpeaker - he was very helpful. My Ayon would allow digital in and out after the transport section and back into the Ayon DAC which Tim recommended via glass toslink and an enhanced power supply. I can also go between pre and amps. With all the glass in my room I do like the idea of full range correction in case it is needed. I will check out the threads on DEQX and sloped baffle. Going to research this carefully.
Also Albert Von Schweikert (my speaker guy) likes to do it with 2 quality subs in rear of room attached to the speaker terminals and servo'd back to the main speakers so that the subs track the mains perfectly, plus then parametric equalization to even out bass modes. In some ways this appeals more than messing with the signal digitally, so I guess I lean more toward purist but hearing is believing, so an audition would be very sweet with any product. The two sub idea runs into my wife hating the idea of "any more boxes".

Coli Is that advice form experience with a particular piece of equipment?

Well, I read through the DEQX threads - seems intimidating to have to take the speakers (mine about 300 lbs each) into the yard, and then spend month dialing the thing in to get the best from it. But results seem excellent. My speakers are designed for excellent time and phase response across a wide axis. The Lyndorf idea of not changing the character of the speaker and amps etc, assuming people selected them because they liked them, is also logical to me. I am also wondering about waiting for Meridian's MQA to be incorporated into equipment as it sounds like it may be a game changer.

I just want to thank everyone for making this thread intelligent, informative, encouraging and respectful. I had begun to fade my time on A'gon after too many uninformed opinions delivered with vitriol on too many threads. I am learning something here where the passion for excellent sound is trumping egos.