Tube upgrades for Prima Luna Prologue 1

I have owned this amp before and rolled a lot of tubes.  I can recommend these.
12ax7 - Mullard reissues, GE 5751.
12au7 - not that important, NOS Raytheon, GE, RCA should be fine.
Power tubes - JJ 6CA7 - big sound and really helps the bass.  Svetlana 6550 is fine too.

The search function is your friend 

https://forum.audiogon.com/search/index?utf8=✓&query=prima+luna+tube+rolling+

I do not own your amp, but the new Tungsol 12ax7 is a great tube.   I have used it in a few components and it is one of the better new production.