Well guys, I sure do feel myself in hallowed company...you obviously all have very good taste to be here, lol!
K4RL...I always suspected the Elise would be a step up from the Crack...glad you're liking her already (and still only early days...).
Shaffer....what can I say?... 007 would appear to be rather appropriate!
a 1er...you'll be paying the Feliks guys a visit, of course?!
Renderman...those tubes should be REAL good - look forward to your (and Mister X's) findings. As for my ECC31s, I can only tell how one sounds coupled with the C3GS I'm afraid...which is probably how things will stay - firstly because I just LOVE the music the pair is making, and secondly because this tube does get the trafo a fair bit hotter, so I don't think I'm gonna take any unnecessary chances (yet!!).
But what I can say at the moment is take all the best qualities of the C3g and add that extra bass and mids I mentioned before. So the sound is somewhat fuller, and the treble is sweeter when handling tracks with over-enthusiastic/poor quality treble recording. The later ('50s) model has slightly more treble, so the earlier tubes might better suit those sensitive to the top end.
All in all I would say this is one mighty tube - which explains why some serious head-fi guys have rated this ( or rather the 32, which is basically the same) ABOVE the mighty Tung Sol Black Glass Round Plate 6SN7. And of course the CV181 (same tube) is also legendary...
But I must repeat...I do NOT recommend anyone using two of these tubes just yet...I must do a lot more testing yet to even think of that!
Cheers everyone...
Edit. Apologies if I have confused people - it would appear I have done for Lord Raven!...when referring to not using "two of these tubes" I meant use one ECC31 IN COMBINATION with a different second tube...so TWO drivers still needed, lol!...and as per my later posts, I am in fact now running two ECC31s with no obvious problems...as yet!!