V1 is the first stage for 4 out of 6 modes in the Stiletto. Exceptions are Fat clean and Fluid drive....these use V2 for the first stage. (And yes, generally the first stage has the most effect.)
However, even then, the next stage goes through V1 so you still get some effect on all modes.
Like I say, I get good results with the JJ in V2. Some folks don't like 'em and I think they would be too dark if put in multiple positions, but they seem "just right" in V2 alone. The other stages won't matter
as much.
And remember, V3 and 4 have cathode follower circuits in place and some tubes (Russian made Mesa for example) may not work properly in those sockets. I have experimented but leave V3 on up as stock (preamp tubes anyway).
I also have tried the new TungSol in V1 and I liked it....lotsa gain, not too bright, but nothing new production made matches the warmth and natural compression (think violin sound) of the Telefunkens that I have acquired. Even then, there were variations and I can not tell you
exactly which ones I have. (Markings fade over time although mine have the 'famous' diamond impression on the tube bottom).
You are not the first one to say good things about the Scumback speakers, but I have/use various Celestions with my Ace...all sound good to me, but the V30 is a bit bright for a Stiletto, IMO. 8)
So how is the weather today in Minn.? I was just there last month (in your airport anyway, in route back from Wis.)
Sure was cold!
:shock:
Good luck!