The Reference 6SN7 Thread

[attmci]

Thanks for the id of Brimar based Sylvania VT-231. I do not see any info or any thing anywhere about this tube.

Is the Ken Rad VT-231 a ribbed plate one or the staggered one and is the Raytheon VT-231 one with T-plates or flat plates?

Apologies in advance for such basic questions, but the photos on the first page of this thread which has descriptions of the various tubes do not open for me.

Thanks in advance.

https://www.head-fi.org/threads/the-6sn7-identification-guide.209782/

 

[DeweyCH]

Picked up a few nice ones - a couple of Fotons and a CBS brown base:

 

[attmci]

Anyone wants a Fivre? @rosgr63
https://www.ebay.com/sch/rosgr63eb/m.html?_nkw=&_armrs=1&_ipg=&_from=

 

[Paladin79]

Anyone wants a Fivre? @rosgr63
https://www.ebay.com/sch/rosgr63eb/m.html?_nkw=&_armrs=1&_ipg=&_from=

Been there, done that, but thanks. Quite a selection.

 

[attmci]

Been there, done that, but thanks. Quite a selection.

Those are poor man's ECC33. Very nice.

 

[mayurs]

My tube dealer has sent me pictures of a Mullard British made 6sn7gt which I cannot find any information on. Please help me with the actual make of this tube

 

[SHIMACM]

It looks like a 6n8s Foton Russo.

 

[bcowen]

It looks like a 6n8s Foton Russo.

Good call, @SHIMACM ! That's exactly what it appears to be, 1956 or later as it has the non-ribbed plates. Below is a 1959 Foton 6N8S:

 

[tubebuyer2020]

Good call, @SHIMACM ! That's exactly what it appears to be, 1956 or later as it has the non-ribbed plates.

Late 1962 or later, since it does not have 4 bottom mica cut-outs. If the getter is a flying saucer one, then late sixties or maybe even seventies. Why do I even know this... Should have state with solid state stuff...

 

[Ripper2860]

Well, your forum moniker kinda tipped your hand.

 

[tubebuyer2020]

I was meant to stop, but then @bcowen started praising Fotons at good prices. My willpower has a limit.

 

[Ripper2860]

Stands to reason that he would. @bcowen had a college roommate that is now is a Russian Oligarch that dabbles in the Foton tube biz. Well, and he's also the exclusive supplier of Novichok to Putin.

 

[mayurs]

These tubes are enroute to me for my Feliks Euforia. Can't wait to get them. Is there an easy and inexpensive way to clean the pins which seems a bit dirty to me?

 

[whirlwind]

These tubes are enroute to me for my Feliks Euforia. Can't wait to get them. Is there an easy and inexpensive way to clean the pins which seems a bit dirty to me?

Fine grit sand paper or dremel

 

[tubebuyer2020]

These tubes are enroute to me for my Feliks Euforia. Can't wait to get them. Is there an easy and inexpensive way to clean the pins which seems a bit dirty to me?

Dirty pins may easily result in noise. Maybe a deoxit pen could help. They are not exactly cheap, but cheaper than any of those tubes I presume.