For those who requested examples of what sound to me like good and bad releases, I have numerous examples of both, but I just played these two and consider them prime candidates in the jazz category:
Excellent, well-balanced, and natural-sounding production:
Sonny Rollins, Saxophone Colossus, Original Jazz Classics # 0JCCD-291-2, Prestige label # P7079, originally recorded in 1956, remastered - smooth, clear, natural sounding mids & highs; clean, crisp transients; tight bass; balanced overall tonality - I'm listening to an actual performance with acoustic instruments when I play this disc.
Super-hot, artificial sounding production:
Eric Darius, Goin' All Out, Blue Note Label Group # 0946-3-87848-2-1, released 2008 - undefined, over-blown bass; brittle, harsh-sounding (clipped?) highs - I'm listening to a disjointed, almost surrealistic interpretation of a jazz performance with overly exaggerated top and bottom ends when I play this disc.
I enjoy the Rollins album immensely, and can listen to it over and over again without having any audible flaws jump out at me. I spend a lot of time trying to ignore the edgy, shrill highs and tubby bass of the Darius album, so I don't really enjoy playing it as much as I should. That's a shame, because Darius is an accomplished horn player who sounds great live, and the tunes are fine, but the production sucks.