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The 6SN7 Identification Guide - Page 5

post #61 of 67
4/2/09 at 8:48pm
Quote:
Originally Posted by mourip View Post
All of the sudden I am noticing information about NOS 1950's Russian 6H8C tubes, a 6SN7 sub, with very positive reviews and high prices. The well rated tube has specific plates and a nickle base. They are showing up on EBAY and someone is selling what looks like the same tube here on Head-Fi. Coincidentally the ad here and also one of the ads on EBAY quote the tube seller Jesse Brent as giving this tube high marks.

http://www.head-fi.org/forums/f44/fs...es-nos-409023/

Rare 6H8C Russian Military 6SN7GT Nickel Base Tubes NOS - eBay (item 170304968308 end time Mar-03-09 09:51:23 PST)


Anyone tried this tube?

Thanks,

Paul
well,, I just finished reading this thread,and I'll be able to answer that question in a couple of days, as I bought a pair,, I hope they sound better than the chinese jobbies that are in my pre.I just got a Wright WLA 12,, we'll see. BTW,, this thread is fantastic,,and will be one of my "6SN7 reference" tube thread.Thanks to all who have contributed and educated me.
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post #62 of 67
12/13/10 at 7:21am

Can you please help me with identification of this TungSol 6SN7 GT Tube ?

Sorry - I have no change to do better pics now - I hope - you see something.

Tube has writings: TUNG-SOL Made in U.S.A  and letter "P" (top line) code "3221-42" (bottom line)

I know "332" is TungSol code. On the glass there is 6SN7 (top line) GT (bottom line) and "H1M" (probably) on the bottom of the sign.

It has bottom "D" getter. Black "T"-plates. Construction is similar to VT-231 Sylvania included in photos also (on the bottom)

 

13122010060.jpg13122010061.jpg13122010062.jpg13122010058.jpg.

 

 

Sylvania VT-231

159_VT231_SYL_800.1.jpg

 

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post #63 of 67
12/13/10 at 8:01am

322 is Tung-Sol's EIA Code

 

EIA Codes

 

But that sure looks like a Sylvania Bad Boy to me, and it may well be,  I have a few Tung-Sol branded tubes that are clearly OEM'd from Sylvania.

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post #64 of 67
12/13/10 at 8:30am


 

Quote:
Originally Posted by Skylab View Post

322 is Tung-Sol's EIA Code

 

EIA Codes

 

But that sure looks like a Sylvania Bad Boy to me, and it may well be,  I have a few Tung-Sol branded tubes that are clearly OEM'd from Sylvania.



Thanks for the answer!

I just found the difference - in my TungSol tube there is 3 holes in each plate, but in Sylvania VT-231 - from the photo -  2 holes. But I see in thanks to google,  Sylvanias Bad Boys with 3 holes also exists.

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post #65 of 67
11/23/11 at 10:05am

I would like to add another three 6SN7 European makers:

 

ATES (Italy)

Marconi Italiana (Italy)

Philips (Italy)

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post #66 of 67
3/21/12 at 3:18am

Hey tube masters! Got a challenge for you all...

 

I got my first tube amp, a DV336i and the seller has kindly included some tubes for me. One of my 6sn7 is a RCA, which I might post pictures later. But today I want to know which variant is my Sylvania...

 

Took some pictures for you masters. Please help..!!

 

IMG_2000.JPG

 

IMG_2003.JPG

 

 

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post #67 of 67
4/15/13 at 6:00am

The Marconi B65 is not always metal based.

They can be , but are also made with black plastic base.

Also with brown base and with smoked glass or clear glass.

manufactored in Britten Holland USA .

 

I have a few of these types ;-))

They are in my opinion the best of the 6sn7 types

Koldby

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