SYLVANIA 6SN7 GTB tall bottle tubes and short bottle


What is the difference between SYLVANIA 6SN7 GTB tall bottle and short bottle tubes.
Using in a Rogue Metis preamp. Also what tubes do you recommend for the Metis?
System: Rega RP 6 w/ Exact cartridge and Fono Phono Preamp MM, Raga Apollo R CD,
Rouge Metis and Carver M-1.0t mk II opt 002 amp and Source Loudspeaker Technologies
7211 Reed Tower and Kimber cables.

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Here's some good information about the 6SN7 tube.

http://www.audiotubes.com/6sn7.htm

An excellent tube without a huge price is the GE 6SN7GTB short bottle side getter or the GTA version for a few more dollars.


The tall bottle Sylvania 6Sn7GTB is a better sounding tube than the short (standard) bottle version. Not quite as good as the more expensive "bad boy" Sylvanias, but very close.
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This is the story of the so called "BAD BOY"


On HiFi head there was a question put out on ’what was your favorite 6sn7’ tube. This was about 16 years ago.

Some new guy shows up and says ’his Sylvania 3 hole tube is a Bad Boy’ on his earphones. He had nothing else to compare his tube to. That was that.

Members promptly examined the tube to be made between March and July of 1952, that is the period. The big source for any tube then was eBat. Some bought the tube and immediately said it was plain, nothing great.

Suddenly EBAT is flooded with 3 hole Sylvanias regardless of what year or month they were made. let me repeat that...a span of nearly 2 plus years and they are all the ’Bad Boy" this newbie heard, simply because they have ...3 holes.

A $3.00 tube went up and up, and no would admit it was just plain, but instead resold them as THE wonderful, highly sought after "Bad Boy". Well guys it is a plain $6.00 6sn7, period. I have several stock picks for you, by the way, if you are interested.

Try a 1940’s metal base Sylvania or the Russian one, and tell me how great they are next to this 3 hole folklore.

glassandlight 
"A $3.00 tube went up and up, and no would admit it was just plain, but instead resold them as THE wonderful, highly sought after "Bad Boy". Well guys it is a plain $6.00 6sn7, period. I have several stock picks for you, by the way, if you are interested.

Try a 1940’s metal base Sylvania or the Russian one, and tell me how great they are next to this 3 hole folklore."

which Russian one are you referring to? I didn’t realize any Russian tubes were even in the running.