Analytical observations.

The problem is, was, and always will be that when you play back (over loudspeakers) in ANY room, sound that was recorded in another room (call it the PRIMARY acoustical space) you are "mixing", or "blending together" the acoustical properties of the 'recording space' and the 'playback space'. It matters not whether that recording and subsequent playback is done with two, or any number of channels more than two. ("Two, or more than two" because 'two' is the minimum number of source points you need to present the equivalent of an audio parallax or depth perception to the two ears.) You can demonstrate this clearly and easily by putting an ear plug in one ear while listening to a 2 (or more) channel system,

But the problem of the "extra" acoustics of the playback space remains. And so far, there is still only one way (that doesn't involve digital manipulation) to get the full range, recorded event, unadulterated, into the listener's brain, and that would be through headphones PLAYING A BINAURALLY RECORDED SOURCE. For those of you who don't know what that is, Google: > binaural recording <

That is the ONLY way to provide the listener with the "original acoustical event" as it would have been heard in the original recording space. Think of it this way: You're sitting in front of the performer(s) in the room/hall/club/studio, and a microphone has been placed over each of your ears. A simple 2-channel recording is made, and now you listen to the playback over a pair of headphones in place of the two microphones. If you've ever experienced 'Binaural Sound', you know it's the ultimate (reproduced) sonic experience. Remember, I said, "to get the full range, recorded event, unadulterated, into the listener's brain" ;--)
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Most of us can (still) remember a time when we didn't have the choice of physical v. electronic room correction. And one quick, cheap, and easy solution, was binaural recording and playback. It didn't require more expenditure than a pair of headphones; and though it wasn't the most socially acceptable solution ;--) it was an experience you could never forget. The recordings themselves (along with the first stereo recordings BTW) came in the form of R2R tape. But as stereo recordings quickly became available on vinyl, pre-recorded tape vanished practically overnight, and along with it, binaural recording.

Today, we can still make physical corrections to our rooms -- it's not difficult or expensive, and with today's room measurement software, easier than ever to identify the areas that require attention. I can't understand why people who spend thousands on their systems (even if they don't include analog sources), are then willing to add further DSP to all their source material.

Like Siddh, I don't consider those two solutions (physical v. electronic correction) equivalent by any stretch; any more than I consider CGI (computer generated imagery) in movie presentation equivalent to real-life locations (to say nothing of the hardships it imposes on actors ;--) But in both cases (audio and video) if the results are convincing ENOUGH for the average consumer, why spend time and money striving for authenticity (the old analog v. digital debate again!)

But I have an idea!

Since we now have the means of putting multiple layers of program material on an optical disc, why not make one of those layers a simply recorded DSD binaural version? Dust off those headphones, and enjoy the magic of real stereo reproduction!?
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Unsound, I'm not sure I'm understanding your question, but maybe I can be clearer . . . . .

No matter how many loudspeakers there are in the room, or whether they're all even playing the same material or not, as long as all the audio information is being delivered to your brain through ONE ear, and one auditory pathway, your brain will not have the information it needs to tell you about the space you are in (or the space the recording was made in.) The brain needs to "hear" differences in: arrival time, phase angle, reflection times (aka: echos) to "know" something about the spacial environment.

And this is true, whether the "information" is generated in the space itself (like you listening to a live performance,) or it's on a stereo/binaural recording, or if it is virtual space, generated in full or part using DSP hardware/software.

So, one ear = no sonic hologram! BTW, you should try the "one earplug" first, then compare that experience to no earplug (both ears working ;--) but with your preamp set to 'mono'. Do both situations sound the same to your or different?
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