Tubes for Jolida Fusion Preamp


I have a Jolida Fusion pre which takes 2 12AX7 and 2 12AT7 tubes. Looking to upgrade from stock tubes and request herein recommendations. Thanks.
mesch
I have the fusion DAC pre and run GE black plate triple micas and it sounds excellent. Contact tctubes in st paul, mn. They are a husband and wife business and I cannot recommend them enough. Best of luck.
I owned that preamp and it was fun to roll tubes in it.
First decide what type of timbre you are looking for in your system. NOS tubes will sound better than new production tubes, but they are priced higher according to availability.

RCA Blackplates have a very open classic tube sound. I also liked Amperex (Holland) which produce an extremely wide and deep 3D image; however, they will reveal the flaws in a poorly mastered CD.

TCTUBES is a great company, but also check out the Brent Jessee website. It has lots of info on tube types and their particular sonic signatures; plus he has a large inventory of tubes.
Thanks all for the responses. I will check into the suggested suppliers.

As an addendum, I am currently running a Bryston DAC-1 with Audiophileo 2 w/PurePower into the Fusion (Lowrider, I believe you also use the AP/PP converter ) The pre drives a BEL 1001 MK5 which in turn feeds a pair of Esoteric MG10s. My system resides in a tuned dedicated room 12x15x8.5’. I am very happy with the musical experience this system provides. However, as I never owned tube gear I have never had the opportunity to explore the benefits tube rolling provides. Therefore, I think I would like to find a set of tubes that most sonically contrast the Tung-Sol tubes that were supplied with the pre. Looking as much for the learning experience as an upgrade.

Thanks again to all.
There are so many possibilities when using NOS tubes. I think you are mistaking me for another member. But I have been using various tube CDPs and preamps.
My 2 cents as a tube roller is to recommend buying from a dealer with a good return policy (thetubestore.com is a fave) as I've had NOS tubes fail...nice when they're replaced free of charge, and for me a key is buying NOS and not simply OS (old stock) as I really can't trust used tubes unless I'm the one who used them, although maybe I'm paranoid. A fave currently are the NOS Mullard 12AT7s in the phase splitter role in my amp because they explode on start up (what's not to like about that?), and I just ordered a pair of new Gold Lion matched and balanced premium gluten free all natural organic 12AX7s just to see what all the fuss is about (they do look cool after all), and because they're on sale! BLACK FRIDAY man...