[gurubhai]

NEC 6080 and 6520 weren't that great but not bad either. Haven't tried TEN yet.

 

[L0rdGwyn]

NEC 6080 and 6520 weren't that great but not bad either. Haven't tried TEN yet.

Cool, thanks, I'll post impressions when I get these tubes, but it's gonna be a while!

 

[Dogmatrix]

May be difficult to find a Ten 6080 or 6as7g as I think they only made miniature tubes .
Ten brand belonged to Kobe Kogyo Corporation founded in 1949 manufacturing and research into vacuum tubes
Merged with Fujitsu in 1963 and Onkyo in 1967 by which time focus was shifting to transistors

Research did confirm Toshiba , NEC , Hitachi and Matsushita (National/Panasonic) all manufactured 6080 not certain about 6as7g . Don't know if they manufactured complete tubes or assembled tubes from imported components .

 

[L0rdGwyn]

I have seen TEN 6AS7G, never have come across a TEN 6080 though. Unsure of course if they are rebranded, partially assembled, etc.



Edit: found a photo of a TEN 6080:

 

[Dogmatrix]

Good find LOrdGwyn , the 6080 looks very RCA but the 6as7g is interesting the plate structure looks Russian or Chinese but the top getter is out of character so could be Japanese made .
Would be real kudos for anyone who found a Ten 6as7g they would win the internet , I have rarely seen Ten tubes sold outside Japan . On closer inspection they could both be RCA plate structures

 

[Wes S]

I have seen TEN 6AS7G, never have come across a TEN 6080 though. Unsure of course if they are rebranded, partially assembled, etc.



Edit: found a photo of a TEN 6080:

They both look like RCA, to me.

 

[Dogmatrix]

Yes I got a bit excited for a moment but they are likely just rebranded RCA unfortunately
I wonder if any of the Swedish/Scandinavian companies made 6080 or 6as7g LM Ericsson for example

 

[L0rdGwyn]

The TEN tubes very well may be RCA rebrands, all of these Japanese tubes seem to be based on the RCA construction. I am more intrigued by the Toshiba and NEC branded tubes, which seem to have more differentiated construction. I should be able to get some of TEN 6AS7G for a reasonable price, worst case scenario, I have myself a pair of RCA 6AS7G black plates

 

[BearMonster]

Can anyone tell me anything about these 2 tubes

 

[Skylab]

The Sylvania 6AS7GA is a decent tube. They used to be pretty cheap. You can buy its derivative for $12 each NOS here:

https://www.parts-express.com/6as7ga-6as7-ge-jan-vacuum-tube--072-612

That Mullard tube sure looks to me like a rebranded Russian 6N13S. If you can show the getters in another pic I could say for sure.

 

[mordy]

Concur with Skylab. In my experience all the 6AS7GA sound the same so if you want them, just buy the least expensive brand.
The Mullard is a forgery. Here is a similar fake from a seller in Algeria with the telltale double inverted saucer getter:

$188 for a Russian 6H13C tube that you can buy for less than $20.....
https://www.ebay.com/itm/MULLARD-EL...529814?hash=item592a1b6d16:g:-vcAAOSwCnZc3pmg

 

[BearMonster]

The Sylvania 6AS7GA is a decent tube. They used to be pretty cheap. You can buy its derivative for $12 each NOS here:

https://www.parts-express.com/6as7ga-6as7-ge-jan-vacuum-tube--072-612

That Mullard tube sure looks to me like a rebranded Russian 6N13S. If you can show the getters in another pic I could say for sure.

 

[Skylab]

@BearMonster - that picture doesn’t show the getter

The getters in that tube are at the base of the tube.

 

[cddc]

@BearMonster - looking for 2 flying UFOs inside the base, it's the giveaway of Russian 6N13S.

 

[BearMonster]

@BearMonster - looking for 2 flying UFOs inside the base, it's the giveaway of Russian 6N13S.

Thanks it does appear to be a 6n13s.