Absorption, Diffusion or a combination of it all?

Perhaps I'm a purist. I want to hear the recording the way it was produced and intended to be heard.

So for clarity, I prefer my sound to be direct. I group diffusion with diffraction and reflection as unwanted complexities that were never intended.

It's a bit like the harmonic distortion added by tubes. Some love it and some hate it.

85 decibels is a sound level equivalent to that of a food blender. Uncomfortable and only tolerable for a short time. Most listening levels might not even be that loud.

Having said that, peaks can still get fairly high above the general listening level, so treatment is still wise.

Maybe not as important, but crucial.