Like Detredwings stated above,tube choice is a very personal subject.That being said,in my Tempest II Magnum,I have found that I prefer NOS Amperex 7025 in place of the 12AX7's, NOS Sylvania JAN 6SN7 WGTA's and Gold Lion KT-88 power tubes.Try some different tubes and find some you really like then stock up on them.NOS tubes are getting scarcer and pricier as we speak!!Good luck.
NOS Tubes for Rogue Tempest II
Looking for some suggestions replacing the stock tubes. I want a little more transparency or pop yet retaining overall smoothness and good bass. I want to start with the 12AX7's and the 6SN7's first. I was told the Sylvania 6SN7 GTB would be a good one but there are several versions so I am a little confused. Also the same with the 12AX7 what is a good value without breaking the bank.