In my collection, many of the best sounding recordings happen to be of jazz. The following is a list of some of these outstanding recordings:
Armstrong: "Satchmo Plays King Oliver" (early stereo, but not surpassed in sound quality).
Ellington: "Blues in Orbit" (again late 1950's stereo recording that is amazingly good. I use an original issue, six-eye Columbia recording to demonstrate how little recording arts have advanced)
Brubeck: "Time Out" (original six-eye Columbia that sounds better than reissues)
Clark Terry "Alternate Blues" (a reissue from Classic Records, I believe, that is extemely dynamic)
Yamamoto Trio: "Midnight Sugar" (Japanese Three Blind Mice record. ANY TBM record will sound fantastic; CD is decent, but not as good)
Great Jazz Trio: "Direct from L.A." (original East Wind (Japanese) label album. The CD reissues are decent, but, not as dynamic as the original).
Bill Berry Allstars: "For Duke" (a direct to disc album from M&K records. Any other M&K direct to disc record will also sound good, such as "Fatha")
Oliver Nelson: "Blues and the Abstract Truth" (many different reissues and they all sound quite good)
Rollins: "Saxophone Colossus" (one of the great recordings for music and sound quality; I use it to demonstrate how good MONO can sound)
Modern digital recordings also do a great job with jazz. I offer two samples:
Anour Brahem: "Thimar"
Stefano Battaglia; "Re Pasolini"
I don't usually think of vocal works as jazz. To me it is its own genre and there are MANY great sounding recordings. I will only offer one example of a top singer playing with a first rate jazz orchestra:
Ella Fitzgerald and Marty Paich: "Whisper Not"