Mahler123 is correct that violin recordings with orchestra are just about always overmiked. Unfortunately, the live reality is that the 1 violin soloist is competing with at least 20 players in a small chamber orchestra in Mozart concertos, e.g. For big concertos like Brahms, the orchestra has 100 players, so the ratio is even worse. In addition, the violin SPL is fairly soft, and winds and brass are much louder. The orchestra is told to play softer in order to let the violin soloist be heard better, but it is still a losing battle for the soloist who is vastly overpowered. I have been frustrated by how the violinist often has to play louder than he wants in order to just be heard over the orchestra. This live experience is certainly natural, but so are rotten apples that taste bad and poison mushrooms that kill you. Piano concertos with orchestra have much better live balance, since the piano has very loud natural capability, and its unique percussive character enables much better natural balance with the orchestra. The bottom line for hearing violin concertos with orchestra live, is that only the first few rows let you hear the violin soloist’s details at reasonable volume, say 60 dB. Further away, at 40-50 dB, the live violin is certainly natural, but micro details and nuances are mostly missing, compared to the 1st row.
This is one reason I gravitate towards chamber music such as string quartets where there are only 4 string players and they are easy to balance. Recordings mike all the players equally, so these better balanced recordings are a much better likeness to live reality than violin or flute concertos with orchestra.
There are many examples of small orchestra pieces that have been performed by string quartet (SQ). Mozart’s Eine Kleine Nachtmusic is very popular for orchestra, but have you heard it played live or on recordings as a string quartet? I love my Budapest SQ recording from about 1960. In the SQ, the details and individuality of each player are showcased and the ensemble has great balance--the best of everything, and not too loud, which prevents fatigue. Whereas in a string orchestra, all the players in each section are blended together so you can’t hear the true greatness of each musician.
There are perverse examples of the other way around--string quartets arranged for orchestra. Mahler did this, but all he did was multiply the string quartet with many players on each part. Leonard Bernstein was a great artist conductor who made a recording of late Beethoven quartets on DG. I like his interpretations, but there is still more sensitivity and detail heard with almost any professional quartet playing these works.
I suggest to music lovers who love sound that they pursue whatever means is needed to get more knowledge and appreciation of the music. Live unamplified sound is the most natural, but there are compromises with that. Far away balcony sound has good balance, but there is so much detail missing compared to the close seats. Very close seats have much more detail but some balance is sacrificed. The gold standard on an intellectual level is the score, which contains details that almost nobody in the hall hears. A reasonable combination of good attributes is the 5th row. I make a personal choice to emphasize the details, which gets me closest to the score, which is why I get the most thrills from performing on stage. Another poster told of his thrills hearing Gidon Kremer the violinist from the 1st row, compared to his usual more distant seat. So enjoy those violin and other recordings that are close miked with unnatural balance. At least you get the details with the fullest appreciation of the sensitive nuances of the soloist.
If I get to age 100, I expect to be nearly deaf. I might still be able to perceive live natural balance from a distant seat, but it will be so faint as to not matter much. At age 105 with total deafness, I will seek musical pleasure from reading scores and "hearing" it in my mind. I believe this is possible, even when the hair cells in the ear cochlea are gone. Even now, I can elicit tears from my memory of great music I know, when it is silent in the room. Beethoven "heard" his late music when he was totally deaf, and these are among his great masterpieces. I fantasize that one day we will have media that electronically stimulate the auditory cortex of the brain, so we can play a recording direct to brain and hear it that way. Maybe some offspring of the producers of direct-to-disc.