No doubt or hesitation that the room should be at the top of the list. Before or after speakers is debatable but definitely ahead of gear. I have yet to prove this to myself but what I’m finding so far leads me to believe optimized room / setup is necessary to distinguish between gear subtleties and certainly for gear to reach its full potential.
I recently added some treatments and am pretty happy with the results. The free standing bass traps are meant to be placed to mirror the wall hung 244 for critical listening. I’m still playing so the jury is still out but they seem to help where they are also.
What surprised me most is the difference knocking down the component rack between the speakers made. With the rack at full height there seemed to be certain frequencies / mixes / instrument / whatever that refused to play behind the speakers.
The opening kettle drums in “Fanfare for the Common Man” were full on out of the left speaker where much of the other percussion were pretty well placed. In another example the title is unimportant but the piano part in an Octave Records release played directly out of the tweeters. Not all pianos. Like the kettle drums, most are well behaved. Just this one.
After knocking down the rack the whole sound stage seems to be deeper and better defined and those two pieces, though not perfect, are significantly improved. I’m a doubter no more.

