Jazz Club..... Nice....

Dave ,
A few names you may or may not have come across. 
Good stereo recordings from the late 1950s-early 60s.

1 Dexter Gordon "Doing All Right" Blue Note.
2 Coleman Hawkins "The Hawk Relaxes"  Prestige.
Some West Coast Jazz flavor,
3 Hampton Hawes "For Real"  Contemporary 
4  Curtis Counce "You Get More Bounce With Curtis Counce" Contemporary. 
They're all either quartet or quintet groups.
Charles 

Hi Dave,
I'm glad that you are enjoying the jazz genre,  timeless music performed by supremely gifted musicians.  Frogman made some wonderful recommendations.  Dave, you won't find a more knowledgeable jazz aficianodo on this forum than him.

I hope that the Gold Lion KT 77s work out well for you. They've achieved quite a word of mouth reputation, of course  different ears/amplifiers/audio systems are a factor in regard to preference. 
Charles 

Dave,
I have used a 300b amplifier for a number of years. Back when I used my el34 amplifier I had the Svetlana Winged C and they were good sounding tubes.
Charles

Hi Dave ,
Many owners of el 34 amplifiers seem to be quite enthusiastic about the Genalex Gold Lion KT 77. It is said to be a direct drop in replacement for the el34. Some seem to like JJ electronics and the Mullard re-issue el34.
Charles

@petg60, 
"Plenty to discover" you wrote. 
Absolutely true!
I didn't want to overwhelm a new listener with a hugh list of good jazz recordings, which could easily be done. No doubt Dave will discover many as he becomes more familiar with the jazz genre. 
Charles 

Hi Dave,
Congratulations on acquiring the Yaqin amplifier as they have earned a very solid reputation for reasonably priced tube amplifiers. Does your amp allow switching between Ultralinear and triode mode? If so do you have a preference?

I  believe that your appreciation for this amplifier will grow as you delve further into jazz recordings. Good tube amps just seem to get those instruments and voices sounding right! 😊.
Charles

@rib61, 
Since Dave is new to jazz and likes "Kind of Blue"  I included a couple of musicians from this recording. Cannonball Adderley on alto saxophone and John Coltrane who plays tenor saxaphone. 

Definitely there are many additional recordings that feature pianist Bill Evans and bassist Paul Chambers. 

With these iconic guys you could easily make a list 3 feet long full of excellent jazz ecordings of their playing.. 
Charles 

Hi  Dave,
What tube amplifier are you using? Just curious as I have 3 of them. Welcome to the world of jazz music😊.
Charles

OP,
If you’re developing an interest in jazz here are a few you may find enjoyable.
1 Julian (Cannonball) Adderly, "Something Else" prominently featuring Miles on trumpet.
2 Miles Davis "Someday My Prince Will Come"
3 John Coltrane "Giant Steps" and "Blue Trane"
4 Gerry Mulligan "Night Lights"
5 Chet Baker "Chet"
6 Milt Jackson "Bags Meets Wes" (Wes , referring to jazz guitarist Wes Montgomery).
Tiny sample of some wonderful jazz. There are thousands more😅.
Enjoy,
Charles