Preamp Deal of the Century

In my opinion, deHavilland Ultraverve preamp is also considered a killer at the retail price of USD$2500.00 with lush sound and dynamic. I will also definitely suggest any custom made preamp with "true zero-feedback" (I mean real true zero feedback) is the best preamp with a reasonable price but it is still a killer preamp.

Anyone measure AC polarity as reversed on their Supratek ?

I have 8 month old Chardonnay and today did polarity check as having ground hum issue.

1. did polarity check on FIM wall outlet. It is correctly wired.
2. disconnected every cable from every audio item
3. used cheater plug
4. measured chassis voltage ( AC ) with cheater plugged in both ways
5. Chardonnay had noticeable difference in chassis "leakage" between cheater plug being plugged in correctly and reversed. The "reversed" position was signficanly lower. per Bound for Sound article, use lower voltage as best way to plug in equipment

Pioneer 45A DVD/SACD player had noticeable voltage difference but only 50% of Supratek. And Pioneer polarity was ok.

Dodd 50W power amp was next to impossible to determine as voltage readings ( less than 1 V ) were essentially the same.

Larry,

Sounds good. The sellar has included a bunch of tubes with the Syrah. He told me his preferences out of what he has. I've read the thread and there seems to be a consensus on which tubes sound "best".

Any help would be most apreciated!

Joe

Hello Jpms. I have both NU 350b's and Western Electric 350b's and cannot hear any differnce between them when used for regulator duty in the supratek. As many of you well know,the 350b was never really designed for regulation duty as it was traditionally used as an output tube, and when used as an output tube in an amplifier,it is without any doubt...the king of the 6L6 family of tubes. That said: I cannot hear any difference when used as an output tube either. Like most Western Electric vacuum tubes,the name itself will command premium money.If one can find the NU labeled 350b's at a decent price........grab em while you can! Hey gang..... It is like good real estate, *they ain't making anymore* Cheers

Thanks Ecclectique, great information, like allways.