[mordy]

Good point as always hard to argue with You Mordy

That's arguable lol...

 

[g0ldl10n]

I recently acquired a second Tung-Sol 7236 and it has a noticeably warmer sound than the one I already owned. The only real difference I am seeing is one had a red label, and the other has a white label - the date codes are 1961 (warmer sound) and 1965. I have searched on the differences between the label color, but really didn't come across much. Does anyone know if there were any differences between Tung-Sol 7263 tubes? Below is a picture of the comparison shot.

One other thing, the white labeled one has '3213999' on it as well - not exactly sure what this is.

 

[mordy]

I recently acquired a second Tung-Sol 7236 and noticed has a noticeably warmer sound than the one I already owned. The only real difference I am seeing is one had a red label, and the other has a white label - the date codes are 1961 (warmer sound) and 1965. I have searched on the differences between the label color, but really didn't come across much. Does anyone know if there were any differences between Tung-Sol 7263 tubes? Below is a picture of the comparison shot.

One other thing, the white labeled one has '3213999' on it as well - not exactly sure what this is.

All the tubes with a lot of 9s were made for IBM computers.

 

[g0ldl10n]

All the tubes with a lot of 9s were made for IBM computers.

Oh, this is interesting information - well, I do enjoy it more than the other one. Ah, I think I found a reference to that .. "This tube was used as a motor driver for early computer tape drives instead of a pass tube so it had no need for a highly elevated cathode." Crazy it can sound so good in an amp while it was engineered for this.

 

[gibosi]

I recently acquired a second Tung-Sol 7236 and noticed has a noticeably warmer sound than the one I already owned. The only real difference I am seeing is one had a red label, and the other has a white label - the date codes are 1961 (warmer sound) and 1965. I have searched on the differences between the label color, but really didn't come across much. Does anyone know if there were any differences between Tung-Sol 7263 tubes? Below is a picture of the comparison shot.

One other thing, the white labeled one has '3213999' on it as well - not exactly sure what this is.

Keep in mind that these were not made for use in audio systems. That said, tubes manufactured in the same factory but at different times often sound different. Over time, new materials, new technologies and feedback from the field resulted in production changes on the factory floor.

 

[AudioDuck]

I recently acquired a second Tung-Sol 7236 and noticed has a noticeably warmer sound than the one I already owned. The only real difference I am seeing is one had a red label, and the other has a white label - the date codes are 1961 (warmer sound) and 1965. I have searched on the differences between the label color, but really didn't come across much. Does anyone know if there were any differences between Tung-Sol 7263 tubes? Below is a picture of the comparison shot.

One other thing, the white labeled one has '3213999' on it as well - not exactly sure what this is.

I have to say I LOVE my Tung-Sol 7236s so much with my Woo Audio WA2 (as power tubes) that I bought a second pair of Sylvanias as backups... they are excellent!

 

[bpiotrow13]

I have to say I LOVE my Tung-Sol 7236s so much with my Woo Audio WA2 (as power tubes) that I bought a second pair of Sylvanias as backups... they are excellent!

My experience is Sylvania 7236 is a bit different to TS 7236. TS sounds like a solid state. Sylvania is a bit warmer with stronger bass, overall not far away from TS 5998.

 

[AudioDuck]

My experience is Sylvania 7236 is a bit different to TS 7236. TS sounds like a solid state. Sylvania is a bit warmer with stronger bass, overall not far away from TS 5998.

Thank you- I didn’t realize the “flavors” of the 7236 would be that distinct…

I’d experienced it with 6922 input tubes, but not within a power tube category/“family”. I’ll be curious to see if the Sylvanias suit me better that the T-S pair, or if it’s too much warmth with the Brimar CV4003 input tubes…

 

[mordy]

Thank you- I didn’t realize the “flavors” of the 7236 would be that distinct…

I’d experienced it with 6922 input tubes, but not within a power tube category/“family”. I’ll be curious to see if the Sylvanias suit me better that the T-S pair, or if it’s too much warmth with the Brimar CV4003 input tubes…

Let us know what you think when you have tried both pairs - in general it seems that people prefer the Tung Sol.

 

[bpiotrow13]

Thank you- I didn’t realize the “flavors” of the 7236 would be that distinct…

I’d experienced it with 6922 input tubes, but not within a power tube category/“family”. I’ll be curious to see if the Sylvanias suit me better that the T-S pair, or if it’s too much warmth with the Brimar CV4003 input tubes…

It is not very different, but still.

As for warmth, I use Mullards cv4003 for drivers and it is not too warm, but this is very subjective.

 

[nephilim32]

Hey, I came across this RCA 7236 on ebay and have been trying to find information on it, but have been quite unsuccessful. I do like the Tung-Sol 7236 I have for my DV, so decided to purchase one of these, was only $12.00 so I thought wth? However, if anyone has any info on these that would be appreciated!

Also, there is still one left on ebay for $12.00 for anyone that may be interested.

Your base is crooked like my Thomson CSF 6080 WA.
Originally I thought this was a problem like improper craftsmanship, but actually it is common amongst NOS. Anyway, I’m a guy who just got his WA 22 delivered today! Just getting my feet wet, however I will be leap frogging the stock tubes with these 6N13S (6AS7G) NOS SOVTEK power tubes God they’re beautiful.

 

[AudioDuck]

Congratulations on the WA22! May you have many happy years of listening to it. Woo amps are awesome!

 

[nephilim32]

Congratulations on the WA22! May you have many happy years of listening to it. Woo amps are awesome!

Very kind of you to say that. I’ve got quite a ways to go in-terms of getting some serious hrs put on my WA22. I’m a good 25hrs in and all I can say is that I’m extremely happy. Just wish I did it sooner, but everything is so bloody expensive these days. Anyhow, the 6AS7G’s (NOS) from Sovtek are absolute quality. Also I’m not going past Noon on the volume dial ever with my HD 800’s. The WA22 handles high impedance headphones very well.

 

[jbua5150]

Can anyone tell me if these are actually Mullard and made in England?
Thanks

 

[CAJames]

Can anyone tell me if these are actually Mullard and made in England?
Thanks

Yep. The R means Mullard, Mitcham UK.