Any Zesto Leto 1.5 owners here?

Guess not

zesto 1.2 is much better with a tele 12ax7 nos. Bigger soundstage and tone.

I have owned the Zesto phono stages as well as the excellent sounding Leto 1.0 preamp.  I do not suggest rolling tubes.  You get a different sound, not better.  Zesto designed their equipment around the stock tubes.  I tried different tubes, all resulting in worse sound.  Don't waste your time or money unless you already have tubes at home to try.

philharmonicpete, do you still own any Zesto gear?

One other point.  Never even consider rolling tubes until your new Zesto gear breaks in.  That means at least 600 hours of play.  I wouldn't try different tubes, if that is your intention, until the 1000 hour mark.

Thank you for the suggestion.

I was not considering tube rolling for awhile... just "new' owner excitation and curious about all things Zesto, there is very very very little information about these preamps, especially the Leto, out there.