The Reference 6SN7 Thread

[Deceneu808]

I have had some I had to redo a few times and I extract the old solder, clean the inside of the pins with liquid rosin, then use rosin core solder of a small diameter inside the pins. I did a tube once where I could actually see the solder was around a pin but not adhering properly till the fourth cleaning lol. Rosin cleans the metal you are about to solder and after 60 years or so, the pin wire can be corroded.

Interesting enough is that I just resoldered them and they are dead silent in one amp and buzz in the other. Will they benefit from a old fashioned burn in ?

 

[smallmouthrule]

Did somebody listen to the Sophia electric 6sn7 blue glass? I could barely find opinions about it.

Best 6SN7 I have heard. Went through many others old and new and these are the best to my ears. Sophia Electric tubes are second to none. Thanks.

 

[Renexx]

Interesting, I couldn't find many sound impressions of these tubes and they seem to be discontinued aswell.

You did compare them to VT-231s and they are better ?

I only have psvane cv-181 gold as new production tubes and they are not better but haven't burned them in properly.

 

[TLO]

Best 6SN7 I have heard. Went through many others old and new and these are the best to my ears. Sophia Electric tubes are second to none. Thanks.

Really? Which one? hmm...one post and one like...
The one that sell for as high as USD240 per piece where it is basically a relabeled NEC / Channel Master 6SN7GT that sell for dirt cheap in Japan?

 

[musicinmymind]

Really? Which one? hmm...one post and one like...
The one that sell for as high as USD240 per piece where it is basically a relabeled NEC / Channel Master 6SN7GT that sell for dirt cheap in Japan?

May be this one
https://www.ttvjaudio.com/Sophia-6SN7-p/sop0000173.htm

 

[Paladin79]

Yeah, @Paladin79 owns them all. Well, except the single, lonely one I have. That he gave me.

But if I get to feeling inadequate at some point, I'll call up the Foton army and obliterate him. Strength in numbers and all.

The Melz 1578 is like the English long bow, it took skill to master and was effective at long distances. At the battle of Agincourt in 1415, 1,000 arrows were fired every second.

The Foton is more like the medieval cross bow, something you handed to peasants so they could learn it quickly and kinda, sorta, hit something at close range if they were lucky. Foton army indeed lol.

 

[Paladin79]

Thank you. Found it ! Should arrive in March

I was hoping I left enough clues,

 

[Paladin79]

Best 6SN7 I have heard. Went through many others old and new and these are the best to my ears. Sophia Electric tubes are second to none. Thanks.

My current 6sn7 testing was set up to include any tube, any shape, and pairs of single triode tubes like 6j5 or 7A4 so we certainly did blind tests with Sophias and tubes at high prices but I want to say we maxed out at $2,000 on a couple tubes. My earlier testing prohibited some of the round tube shapes.

I used the same setup for @bcowen and for Jason at Schiit. Bill had the ability to name many of the tubes blind, I can name a few as can local friends but not to his accuracy.

 

[TLO]

May be this one
https://www.ttvjaudio.com/Sophia-6SN7-p/sop0000173.htm

https://www.head-fi.org/threads/sophia-electric-6sn7.442746/

That blue glass version is made by Tianjin Full Music.

 

[Paladin79]

Interesting enough is that I just resoldered them and they are dead silent in one amp and buzz in the other. Will they benefit from a old fashioned burn in ?

All tubes have a burn in period I would think, often I do like a tube right out of the box and can tell if I will like it later but if I say that out loud @bcowen may have a hissy fit.

 

[jonathan c]

All tubes have a burn in period I would think, often I do like a tube right out of the box and can tell if I will like it later but if I say that out loud @bcowen may have a hissy fit.

…hissy fit , hissy tube …

 

[bcowen]

The Melz 1578 is like the English long bow, it took skill to master and was effective at long distances. At the battle of Agincourt in 1415, 1,000 arrows were fired every second.

The Foton is more like the medieval cross bow, something you handed to peasants so they could learn it quickly and kinda, sorta, hit something at close range if they were lucky. Foton army indeed lol.

After resoldering the pins, Fotons are more like this:

 

[bcowen]

All tubes have a burn in period I would think, often I do like a tube right out of the box and can tell if I will like it later but if I say that out loud @bcowen may have a hissy fit.

 

[LoryWiv]

After resoldering the pins, Fotons are more like this:

Photon torpedo? This thread needs the occasional Star Trek reference.

 

[tafens]

Photon torpedo? This thread needs the occasional Star Trek reference.

Absolutely. But spell it Foton torpedo instead, and the the word “torpedo tube” gets a whole new meaning…