[JTbbb]

Hey guys,

I got some nice additions to my collection. Wondering which dates these were made. Can somebody explain the date codes please ?

Brimar CV1988 KB/FE 7236

GEC QA2408 KC 4

Those Brimars are 1972 week 36

 

[JTbbb]

Hello all,

Need some help with these. Maybe dumb question, they are Kenrads? And what date?

Thanks

 

[TLO]

Hello all,

Need some help with these. Maybe dumb question, they are Kenrads? And what date?

Thanks

Yes, CKR is Ken-Rad. I never get to know what is the first letter stands for but the second numeric is the year. Here E3 is 1943. I have Ken-Rad VT-231s with date code, B3, H3, K3 and they are all from 1943.

 

[JTbbb]

Yes, CKR is Ken-Rad. I never get to know what is the first letter stands for but the second numeric is the year. Here E3 is 1943. I have Ken-Rad VT-231s with date code, B3, H3, K3 and they are all from 1943.

Thanks very much, it was a bit of a gamble buying these as untested, and not matched. But I gave the pins a clean, put them in my Euforia AE, plugged a cheap pair of headphones in, just in case, and now on my Senn’s and Focal’s. Sounding wonderful.

 

[Ranger Ron]

Are there any warmer sounding 6SN7 tubes that you recommend, that are not unobtanium.
I like my Shuguang Black Treasure for their warmth, but my pair is slightly microphonic.
My Tung Sols and CBS tubes are totally quiet, but have a leaner sound.
How are the new Linlai 6SN7s?

I think the Rogers branded tubes out of Canada that look very similar to Sylvania 6SN7WGT’s are very warm and robust sounding. They can be found relatively cheap still.

 

[toddc2]

...deleted Newbie error in reply...

 

[toddc2]

Hey,
Any links for the preferred Sylvania VT231 1940s, reasonably priced from a preferred seller/dealer, or any one willing to let go from his collection?

I have a ordered these from Brent Jessee before, he has a couple of matched pairs in stock:

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

Good luck, these are excellent tubes and pretty rare these days.

Todd

 

[leftside]

Hey guys,

I got some nice additions to my collection. Wondering which dates these were made. Can somebody explain the date codes please ?

Brimar CV1988 KB/FE 7236

GEC QA2408 KC 4

1954 and 1972. What are the tubes on the left? B65?

 

[Renexx]

1954 and 1972. What are the tubes on the left? B65?

Thank you, AQ2408 should be B65 premium quality.

I didn't expect Brimar to produce 6sn7gtys until the 70s. American manufacturers were producing GTBs in the 50s already.

 

[lumdicks]

Hey guys,

I got some nice additions to my collection. Wondering which dates these were made. Can somebody explain the date codes please ?

Brimar CV1988 KB/FE 7236

GEC QA2408 KC 4

This QA2408 is really good!

 

[whirlwind]

Hello all,

Need some help with these. Maybe dumb question, they are Kenrads? And what date?

Thanks

Nice. Great tubes.

 

[TLO]

I am looking to make some upgrades on my tube amp LM508IA, hope someone who is familiar with tube sockets could offer some great advises. Currently, the amp has the stock sockets for 1 X 6SL7, 2 X 6SN7, 2 X 300B, 2 X 805. Planning to change the 3 X 8 pin octal and 2 X UX4 but leave the 805. Below are the stock sockets and you can see they are not of the best quality or design.

Please advise what kind of clip design and brand I should be looking for as in built quality and reliability. BTW, I roll 6SL7 n 6SN7 regularly, perhaps up to 10 times per month. Thanks in advance!!!

 

[Thaddy]

This morning I lost pair of 1948 RCA Victor's. I had just listened to them last week, but this morning the right channel was silent. As I was getting the right tube out, I heard a bit of a crunching sound. Uh oh. It probably had a micro crack and I must have put some pressure on the glass installing the tube. I'll miss the pair, they sounded great

 

[Patswalker]

Semi-noob question that seems to stump some tube pros...

On a tube amp I have, the Tor Roger, on the site it states....

Tube: 6N8S (analogue 6SN7) (not hybrid)
and
Rectifier: 6C5S (analogue 6X5GT)

Does anyone know if this means that it is safe to use 6SN7 tubes and 6X5GT as replacements? The company is not able to respond super fast these days, they're in Ukraine.

I reached out to Brent Jessee and he's not sure what is meant by "analogue 6SN7 (not hybrid)" or "analogue 6X5GT" and advised I reach out to the Tor company which I did but, again, they're in Ukraine so I'm not expecting a reply any time soon.

So if anyone here has any experience with the Tor Roger and tube rolling on it, if anyone here has any idea if it's safe the use 6SN7 and 6X5GT as replacements, I would very much appreciate some advice.

 

[fuhransahis]

Semi-noob question that seems to stump some tube pros...

On a tube amp I have, the Tor Roger, on the site it states....

Tube: 6N8S (analogue 6SN7) (not hybrid)
and
Rectifier: 6C5S (analogue 6X5GT)

Does anyone know if this means that it is safe to use 6SN7 tubes and 6X5GT as replacements? The company is not able to respond super fast these days, they're in Ukraine.

I reached out to Brent Jessee and he's not sure what is meant by "analogue 6SN7 (not hybrid)" or "analogue 6X5GT" and advised I reach out to the Tor company which I did but, again, they're in Ukraine so I'm not expecting a reply any time soon.

So if anyone here has any experience with the Tor Roger and tube rolling on it, if anyone here has any idea if it's safe the use 6SN7 and 6X5GT as replacements, I would very much appreciate some advice.

I'm very much a tube noob but I have the Tor Balanced and have been using RCA 6SN7GT tubes with it for a few months and has been great with it.

That said if anyone can clarify that'd be helpful so we don't fry the amps/tubes