Preamp Deal of the Century

In my latest effort to deal with the "glaring" issue associated with my Cortese referred to above, I acquired and tried the RCA gray glass (actually, the earlier "lightening bolt" logo 6SN7GTs that preceded the VT-231 incarnation) and the KenRad 6SN7/VT 231s. In my system, just as in Ooslik's, the RCAs sounded somewhat bright and glarey here and there. The KenRads virtually eliminated the stridency entirely, but a bit of the upper midrange lost a touch of the air and ambient detail I had with my Raytheon 231s and General Electric 6SN7GTBs. I then replaced my Tungsol 5881s with some Sylvania 5881s, and restored just a bit more of that ambient detail. The trick involves getting involving upper end detail and musicality without the glare or stridency. Now, I feel more confident than before about getting there. My next step is securing a good, but not super expensive moving coil. (I've been using the low output--1.5mv.--Grado Sonata.) I also should soon be receiving those Tungsol 6SN7/VT231 Round Plates. Incidentally, in case I failed to relate before, I did not make a single tube roll until I arrived at 200 hours burn in of both the phono and linestages of the Cortese.

Tube rolling with the Supratek pres can be an expensive road to go down resulting in minor effect if any at all.I sold my phono grade black glass Tungsols 6sn7s when the going price of them reached $300,I more then doubled my money. The only select pairs of 6sn7s I have left in my stash are the formidable and attractive looking Sylvania metal base A and the W vintage. The best results were had with a $20.00 Bendix 6106 rectifier and apair of $8.00 Sylvania 6F6gs n.i.b. I have a dozen metal base rectifiers.Philips MiniWatt,BugalBoy, Mullard. N.O.S. select pairs of Genelex gray glass brown base KT-66. Select pairs of early vintage Telefunken,Seimens and Philips moving coil phono select.Right now in my phono stage Im using a $40.00 n.o.s. pair of PCC88 Telefunkens and a pair of R.C.A. 6c4s with excellant results. I gave all these mentioned above $$$ agood lengthy listen. The Bendix ,Sylvania and the $50 for a matched pair Sovtek Kt-66 have the best effect myself and others have found.....You really want to find out what your system can do? If you play vinyl, look into changing your tonearm wire to Nordost Valhalla and your interconnects to your phono stage with the Nordost new line. Far and away the best move you could make.And for a LOT LESS money then tube rolling with your Supratek pre......

Stiltskin,
You've done a lot of tube rolling with your Chenin,
but I would ask you the original question again- regarding midrange glare, that Opus alluded to in his post, and I also mentioned couple of posts back ( I don't think he and myself are smoking the same stuff).
Being through many combinations of stock and NOS tubes, have you ever heard that glare??? (I'd be surprised if you didn't),
and what in you experience is the combination of rectifier, regulators and signal tubes, that gave your the most relaxing and musical quality sound.
As I mentioned in my post, I've only tried Black Glass KenRads and Grey Glass RCA VT-231, and now looking for
rectifier and regulators, that would give me that "relaxed,
musical and non- fatiguing quality".
I've been looking at Philips Miniwatt (Mullard metal base are hideously expensive, and hard to get), and maybe Sovtek or Chinese KT-66.
Appreciate your expertise greatly.

Hey Stiltskin. Great post. And you have to love the return on your investment on the tung-sol rounds.

Hi Maril555, I'm no expert in this area, I stumbled through this hobby on and off for 30 years....I have not experienced an annoying glare in the midrange while tube rolling.Except while my new tonearm wire was burning in. I wish I had it cooked.....My focus while checking out vintage tubes was the rectifier and the regulators in my Chenin.I found the Bendix rectifier in combination with apair of 6f6gs to add meat to the bone from the lower midrange on down.The same effect can be found with a new pair of Sovtek KT-66s and the Bendix. In the line stage area. It is a waste to spend hundreds on a select pair of 6SN7s Im using a used pair of R.C.A. GTs clear glass. I have many more 6SN7s on hand that I could use..... Going back to the rectifier and regulators.I took Ecclectique knowledgable and expert advise in this area. I believe Ecclectique at the time had a Syrah model. It could very well be that this model of preamp responds to vintage tubes more so then the newer models.I am thrilled that my Chenin does not.