I also have the SF Line 2 preamp (SE version). My understanding with repect to tube replacement is that as LV2 and V2 are the two tubes that provide the most gain by far, it is most beneficial to replace those with the better (read more expensive) tubes. Some others (a minority in my research) have stated that the tubes to replace with better ones are in the LV1 and V1 position. No one has mentioned that LV3 and V3 need to have great tubes.
Personally, what I'm going to do is replace my Valvos when they expire with good Siemens (E88CC - 10000 hr)in the LV2 and V2 positions and have Jan Philips 6922 USA in the other 4 positions. I think this would give great sound at a reasonable replacement cost.
Craig,
Are those NOS Sovteks from his "Special Stash" - I think that's what he calls it!
David
Personally, what I'm going to do is replace my Valvos when they expire with good Siemens (E88CC - 10000 hr)in the LV2 and V2 positions and have Jan Philips 6922 USA in the other 4 positions. I think this would give great sound at a reasonable replacement cost.
Craig,
Are those NOS Sovteks from his "Special Stash" - I think that's what he calls it!
David