I would say it's not essential. There are many of us who prefer a classic performance, say a Furtwangler Beethoven or a Horenstein Mahler, in scratchy mono over a poor interpretation on a recording with acoustic gymnastics.
But it is an essential part of enjoying the concert experience, which is the reason why the San Francisco Symphony places the musicians further apart during recordings rather than in their concert positions. Makes it easier for the engineers to do their thing to fool us with the interaural time difference in our hearing.
But it is an essential part of enjoying the concert experience, which is the reason why the San Francisco Symphony places the musicians further apart during recordings rather than in their concert positions. Makes it easier for the engineers to do their thing to fool us with the interaural time difference in our hearing.