pjw, an interesting question and I'm surprised not to see any following comments:
"I often wonder what the great trio's of the 50's and 60's would sound like using 21st century studio's, equipment, and engineers."
No doubt there have been technical advances in recording equipment. But at the same time many aficionados continue to praise older recordings. Is that because of tube rather than solid state electronics? Fewer mics utilized rather than mic'ing each instrument as is typical today? Simpler mixers (fewer channels), and thus less complex electronics? And how about the older recordings being made with everyone playing together at the same time, no individual instruments added separately? I suspect a combination of factors.
On the other hand, some aficionados prefer the additional detail, extended frequency range, and quieter background possible with modern gear.
Regarding engineers I believe great examples can be identified from 40 years ago or more and today at the same time, same for studios. So that comes down to the individual recording.
Just to muddy the water around your question, consider than with older recordings many prefer the mono releases of a given recording over the stereo version. Anyone surprised by that can check current prices for many Blue Note mono recordings compared to stereo released at the same time.
So for me the answer to your question would be, yes it could sound different, but not necessarily better.
"I often wonder what the great trio's of the 50's and 60's would sound like using 21st century studio's, equipment, and engineers."
No doubt there have been technical advances in recording equipment. But at the same time many aficionados continue to praise older recordings. Is that because of tube rather than solid state electronics? Fewer mics utilized rather than mic'ing each instrument as is typical today? Simpler mixers (fewer channels), and thus less complex electronics? And how about the older recordings being made with everyone playing together at the same time, no individual instruments added separately? I suspect a combination of factors.
On the other hand, some aficionados prefer the additional detail, extended frequency range, and quieter background possible with modern gear.
Regarding engineers I believe great examples can be identified from 40 years ago or more and today at the same time, same for studios. So that comes down to the individual recording.
Just to muddy the water around your question, consider than with older recordings many prefer the mono releases of a given recording over the stereo version. Anyone surprised by that can check current prices for many Blue Note mono recordings compared to stereo released at the same time.
So for me the answer to your question would be, yes it could sound different, but not necessarily better.