Jadis with Telefunken 12AX7/ECC83 tubes

-- Right to the Left

-- Tung-Sol 12AX7 new stock,current production, not with gold pin, it push the top end.

-- 5751 Jan GE, it is the good one

Pierre Gabriel

It is coincidentle that in the DA-60 I have that both 12AX7s are current production Tung Sol steel pin. I swap these for Sylvania triple mica blabk plates from the lat 50s. I just had some fresh looking RCA Command 5751s which were simply to fragile and break up fast. Perhaps good for a guitar but not my amp. The 12AU7s right now as an experiment are Telefunkens ECC82 but I am much more pleased when the Heerlen 7316s are in those positions. !Simply holographic!
I almost had a fit when I heard distortion at moderate-low volumes thinking it was the expensive TS KT-88s I put in for over $400.
Thank goodness it was an older tube that tested well but was a variant of the double mica 5751 RCAs Which are much older but appeared at least close o NOS. The amp is truly a very powerful circuit I bought a sleeve some were NOS the others used. It is an older amp but has no cmplaints held up quite well during this last year. A 60 watt amp has no business sounding like a 100 or more wpc. The reputation for thin weak sounding amps went away with the Ei KT-90s it used to use. That I had intended to replace with EL34s. The a very concise and no nonesense recommendation from Jim McShane thus the Gold Lion KT-88s

I tried Amperex, Mullard, Tele and four others I do not recall now - The Telefunkens NOS were the winners in my system for a DA50S both in the 12Au and 12AX sections.

Closer to them were a set of Amperex Buggle boys, a little dry in my opinion compared to the magic of the Telefunkens IMO.

Regards,

The magical part of Telefunkens is that they speak clearly and ennuciate. The tube halographic layered imaging is not all that Telefunken like, not at all. They are very neutral to cool and do the job with precision which may be in fact all you expect your tubes to do.
I like tubes that are alive with some soul, some emotion, that draw you in, and keep you listening. If a tube makes you want say "man is this a great stereo or what" that's where the the tough hunt for a decent pair, getting burned paying a hard dollars worth . The hassle of buying old tubes pays off big time and you forget the B.S. and I say it's worth it.
I hope for and find the emotion with 7136s in 12AU7 positions, by definition Amperex, and the best 5751 I have in my possession -the obvious pick, Raytheon's famed windmill version are telefunkens of 5751a, but a 1950s Sylvania triple mica blackplate truly warms your soul.
Non Jadis related but exemplary, I found that every time I have put Sylvania Chrome domes in my pre amp. I am referring to the W construction types. Only The top getter with gobs of chrome flashing tubes found on the very early 40s GTs or Ws or the oldest of the 6SN7. It has 6SN7W on base and an A etch in the glass n.b. not the GTA although I have a few pairs of GTAs with the W no rod type chrome dome which are very much like the others. The later GTAs have angled "triangle" plates and a very different sound. These tubes the chromed chrome domes really boxed plated with a welled t fin on the bacl which are facing each other, produces music that has the power to make everything going on no mtter how good or troubling only good. All seems well. Now that is one magical tube..
Pardon the poetic rapture.
If the recording blows , the magic ain't there, but anything is reasonably well engineered/pressed glues me to my seat and I just can't help a smug smile. Even with compositions I never loved, I love it then and listen to all of it.
A gear head maybe so who said that was so bad.

Mr M- Since you've brought up one of my favs(the Sylvania 6SN7W); I have to mention the three(really two) iterations of that tube, the shorter one of which I couldn't get out of my amps fast enough(no impact or depth, thin and strident). The tall bottles may have the black or metal base, a "W" or "A" suffix, but sound identical(and wonderful). You realize we just increased their price and decreased their availablity by letting that cat out of the bag, right?