12AT7 tube replacement : Genalex 12AT7 Gold Lion sonically better than JJ ?


Hi, I am contemplating to replace the stock JJ tube with Genalex Gold Lion for my Preamp ;just wonder what   the sonic benefits/upgrade would be. I need your opinions.experiences and suggestion. Thank you 

Simon
simonleemd
Should be fine. Hey, it's only one tube. If you no like, maybe you can return it. Whatever you do, live with the new tube for a while before making a decision. Welcome to tube rolling. I have scores of tubes that didn't make the grade.

Thanks noromance ! How about the Bass ? Is it better than the JJ ?

I hope the overall sound would not become leaner or thin and too-analytic