[Ultrainferno]

  On a whim I bought a NOS 6AS7G from Rogers, black plates, top getter.
 
Is it likely made by RCA? It looks very similar.

 
A pic or date codes etc might help

 

[Zwyguy]

   
A pic or date codes etc might help

Ah yes, sorry:
 

 
That's what's on the base... let me know if better pictures are needed and I'll take it off the amp.

 

[Badas]

^
 
Definitely looks like RCA. very nice condition. Does it have chrome tops?

 

[Badas]

When it comes to Russian 6AS7G's is there any difference in the model types?
 
I see 6N5S, 6H5C and 6N13S. They all look the same.
 
Is there a difference?

 

[GrindingThud]

http://www.gstube.com/data/581/
http://www.datasheetarchive.com/dl/Scans-008/Scans-00176494.pdf
http://www.tubes.ru/techinfo/HiFiAudio/6n13s.html
The Letter differences are Cyrillic vs English
Found the data in an earlier post here:
http://www.head-fi.org/t/410326/for-6as7g-tube-rollers-here/1500#post_10854210
http://www.head-fi.org/t/410326/for-6as7g-tube-rollers-here/1500#post_10854241

When it comes to Russian 6AS7G's is there any difference in the model types?

I see 6N5S, 6H5C and 6N13S. They all look the same.

Is there a difference?

 

[Zwyguy]

Definitely looks like RCA. very nice condition. Does it have chrome tops?

It has what looks like a D-getter with a very small amount of material deposit on top.

 

[Badas]

It has what looks like a D-getter with a very small amount of material deposit on top.

 
Is the sound clean? No hum.
 
RCA 6AS7G is a nice sounding tube.
 
I have 2 pairs Raytheons, 1 pair Sylvania, 1 pair of Tung-Sols, 1 pair of Tung-Sol 7236, 2 pairs of RCA's and 1 pair of Chathams. Plus various 6080's Brimar and Chatham. Plus 3 pairs of Russian tubes.
 
The RCA 6AS7G is second only to the Chatham 6AS7G that I own. However the Chatham is too hard to get now.

 

[Zwyguy]

   
Is the sound clean? No hum.
 
RCA 6AS7G is a nice sounding tube.
 
I have 2 pairs Raytheons, 1 pair Sylvania, 1 pair of Tung-Sols, 1 pair of Tung-Sol 7236, 2 pairs of RCA's and 1 pair of Chathams. Plus various 6080's Brimar and Chatham. Plus 3 pairs of Russian tubes.
 
The RCA 6AS7G is second only to the Chatham 6AS7G that I own. However the Chatham is too hard to get now.

 
There is no hum; it did sound very clean and brighter / more definition in the high frequencies than the tube I had on before but not as much clarity in the mid range as I was hoping for... I only had a little while with it before I had to go to work so I haven't listened to it enough yet. I barely had time to let it heat up.
 
I'm still at work now but I look forward to giving it closer attention when I get back.

 

[Badas]

   
There is no hum; it did sound very clean and brighter / more definition in the high frequencies than the tube I had on before but not as much clarity in the mid range as I was hoping for... I only had a little while with it before I had to go to work so I haven't listened to it enough yet. I barely had time to let it heat up.
 
I'm still at work now but I look forward to giving it closer attention when I get back.

That's good news. I've found the RCA variants can often have a background hum. It does lessen over time tho.
 
So it has no chrome top and has a D-Getter at the top. This is the same as my Raytheon's (which I suspect are also RCA). Very nice tubes. I have one set that is so close to my Chatham. I might actually roll those back in. I'm just using the Russian's at the moment and enjoying a lot.
 
The Chatham is just so freakin lush. However I don't want to use as I can't replace. I will use the day I retire. I hope I don't croak before then.

 

[Zwyguy]

 
That's good news. I've found the RCA variants can often have a background hum. It does lessen over time tho.
 
So it has no chrome top and has a D-Getter at the top. This is the same as my Raytheon's (which I suspect are also RCA). Very nice tubes. I have one set that is so close to my Chatham. I might actually roll those back in. I'm just using the Russian's at the moment and enjoying a lot.
 
The Chatham is just so freakin lush. However I don't want to use as I can't replace. I will use the day I retire. I hope I don't croak before then.

 
It does have very little material deposit on top from the getter, or chrome as you say; about a nickel sized amount.
 
I got the Rogers 6AS7G for $15... Some of those Russian tubes can be found quite cheap. Are they worth looking into? I've heard mixed opinions.
 
I don't have the luxury of waiting until retirement or my tubes would be in a box for the next 30+ years, haha.

 

[Jimmy24]

 
That's good news. I've found the RCA variants can often have a background hum. It does lessen over time tho.
 
So it has no chrome top and has a D-Getter at the top. This is the same as my Raytheon's (which I suspect are also RCA). Very nice tubes. I have one set that is so close to my Chatham. I might actually roll those back in. I'm just using the Russian's at the moment and enjoying a lot.
 
The Chatham is just so freakin lush. However I don't want to use as I can't replace. I will use the day I retire. I hope I don't croak before then.

 
I contacted vacuumtubes.net a few months ago because I was interested in the Chatham 6AS7G's as well and they had them in stock for $20 a piece. The link can be found here. 
 
https://www.vacuumtubes.net/RES%20Audio%20pages/5998.html
 
I never purchased them but I'm sure they still have them in stock.
 
Now you don't have to wait for retirement to use them. 

 

 

[Badas]

   
It does have very little material deposit on top from the getter, or chrome as you say; about a nickel sized amount.
 
I got the Rogers 6AS7G for $15... Some of those Russian tubes can be found quite cheap. Are they worth looking into? I've heard mixed opinions.
 
I don't have the luxury of waiting until retirement or my tubes would be in a box for the next 30+ years, haha.

 I'm 21 years of retirement.

However I'm a bit weird like this. I also collect wine and when I buy a bottle (usually big $$) I look at it and pick a time to drink it. Often 15-20 years away. Stupid aye.
 
Your Rogers: Good price. Good tubes. Definitely a RCA type.
 
The Russians are a mixed bag. My first lot were sold to me and were seconds. Terrible. Bad Vacuum etc. Then I bought another pair by mistake from another supplier. Thought I would just try them and found myself impressed. Buy from a dealer that looks as they know what they are doing. I have two more sets on the way as we speak. I will test and report if they are good. If you get good Russian tubes they produced a very nice sound at good prices.

 

[Badas]

   
I contacted vacuumtubes.net a few months ago because I was interested in the Chatham 6AS7G's as well and they had them in stock for $20 a piece. The link can be found here. 
 
https://www.vacuumtubes.net/RES%20Audio%20pages/5998.html
 
I never purchased them but I'm sure they still have them in stock.
 
Now you don't have to wait for retirement to use them. 

 

 
Damn. Some nice prices there. The Mullards look interesting.
 
The Chathams come in two varriants. Some were made my RCA. The pair I own are really old. Copper internals.

 

[MJS242]

   
Damn. Some nice prices there. The Mullards look interesting.
 
The Chathams come in two varriants. Some were made my RCA. The pair I own are really old. Copper internals.

 
I don't think there are RCA re-branded Chathams.  From what I understand Chatham was once a separate company that was acquired by Tung-Sol and became a division within Tung-Sol.
 
Also, this Rogers tube might be an RCA or it might any other company that has a tube that is indistinguishable from this such as a Westinghouse, Sylvania, etc.  Or this might be an actual Rogers produced tube.  Check for an EIA code:
 
http://www.triodeel.com/eiacode.htm

 

[Zwyguy]

 
 I'm 21 years of retirement.

However I'm a bit weird like this. I also collect wine and when I buy a bottle (usually big $$) I look at it and pick a time to drink it. Often 15-20 years away. Stupid aye.

 
At least wine gets better with age.. your ears are only going to worse!
 

   
Also, this Rogers tube might be an RCA or it might any other company that has a tube that is indistinguishable from this such as a Westinghouse, Sylvania, etc.  Or this might be an actual Rogers produced tube.  Check for an EIA code:  
http://www.triodeel.com/eiacode.htm

 

 
Looking at the box it actually says right on it, "Manufactured by Canadian Radio Manufacturing Corporation Limited..." which appears to be Rogers itself.
 
http://en.wikipedia.org/wiki/Rogers_Vacuum_Tube_Company
 
I had no idea they made their own tubes.