It depends on the function of the tubes. The input or voltage gain tube is going to affect the sound more. I’d guess that is the 12AX7. The 12AT7 is probably a cathode follower (or something like that, someone correct me if I’m wrong).
I am assuming that you have the other tubes that you replaced with the Gold Lions. Put both pairs of your old tubes in and listen for a while to get a good handle on the sound. Then, first change the 12AX7 to the Gold Lion, see if that causes the bass problem, then do the same with the 12AT7. It may turn out that the Gold Lions in one position and the old tubes in the other, or some other combination, works best.
There are a number of threads on the Jolida Fusion here. Do a search and you’ll find lots of info.
I am assuming that you have the other tubes that you replaced with the Gold Lions. Put both pairs of your old tubes in and listen for a while to get a good handle on the sound. Then, first change the 12AX7 to the Gold Lion, see if that causes the bass problem, then do the same with the 12AT7. It may turn out that the Gold Lions in one position and the old tubes in the other, or some other combination, works best.
There are a number of threads on the Jolida Fusion here. Do a search and you’ll find lots of info.