The stereo mixes I’ve done for everything always use “the room” in the mix which is usually largely based on 2 or more rear wall mics capturing those reflections at “the source” (ie the wall) as well as high up (ie, the ceiling).
So I mix the stereo as well as multichannel using those tracks (2 stereo or sometimes 3 with 1 mono). In that way I avoid having to use artificial reverb and delay which is so commonly used (both analog and digital versions of these) in studios that most engineers/producers don’t think twice about it.
By using ambient sound in the mix to bring back the natural reverb and delay (slapback sounds from the wall vs the stage) I can recreate a very authentic reproduction that has nothing artificial added. Just EQ and panning (right and left) during the mix to restore the original sounds and locations in the room.
I started doing this on my own on my very first CD in 1995 (Lost in the Green). I went on to record several other CDs in that fashion through 2001 with Half An Hour Away which I recorded myself in an acoustically beautiful small performance theater in Half Moon Bay on the SF Coast on Hwy 1. Me and my trio at the time (Gary on flute/tenor sax, Lisa on mandolin) played live in the otherwise empty hall for about 4 hours one afternoon with (local fan) director Michael’s permission. I had mics in the audience front rows as well as back at the high seats in the rear wall row. I mixed the 8 total tracks to stereo analog and printed it.
Within a year or two I was planning and then recording “The Window” to DSD in a fancy studio in Boulder using the same approach. They (local engineers) said I couldn’t do it and shouldn’t try — putting all musicians in the same room without isolation (no real traps between musicians!) and creating the live session with as few mics as possible in the room. But I said we should try it just to see what happened so they shrugged and said ok…….. rest is good history for me :)
I think (my ears tell me) that MQA is exactly what was needed to round out the edges imposed by PCM which is how I recorded and mastered those original CDs. It is the coup de gras for returning the original ambient sound characteristics of the room and performance.