For 6AS7G tube rollers here .....
Jun 26, 2017 at 1:52 PM Post #3,887 of 9,562
Did you ever see some GE 5998A with orange base ?
No post here about them ... and google is silent about them :frowning2:

In my experience, the color and shape of the base has no effect on the sound. After all, it is a relatively simple matter to remove and replace the base of an octal tube. The only thing that matters is what is inside the glass bottle. And therefore, a pair of 5998A, one with a black base and one with an orange base, should sound identical as long as they were manufactured at about the same time.
 
Jun 26, 2017 at 7:54 PM Post #3,889 of 9,562
Like this GE in my WA3? It is more of a light amber color:
IMG_0071.JPG
Ok thank you :)
From what I read, I'm not really interested by GE 5998A.

Is there some people with some pics of Tung-Sol 5998A
Can't find some :frowning2:
 
Jun 27, 2017 at 11:01 AM Post #3,891 of 9,562
Is there some people with some pics of Tung-Sol 5998A
Can't find some :frowning2:

To the best of my knowledge, only GE manufactured the straight-bottle 5998A. On the other hand, the coke-bottle 5998 was manufactured by Chatham/Tung-Sol. And then there is Western Electric's 5998, more commonly labeled as a 421A. Some folks think the 421A was manufactured by Chatham for Western Electric, while others think Western Electric manufactured the 421A in-house. I don't know...
 
Jun 27, 2017 at 4:32 PM Post #3,892 of 9,562
I'd say it is similar in sound to a sylvania 7236. Visually, it looks the same as the 6AS7GA.
Thank you, exactly. Internal looking like standartd GE, perhaps a more taller bottle.

Did you compare it against others ?

Regards
 
Jul 6, 2017 at 12:51 PM Post #3,894 of 9,562
Looking for some opinon about the sound quality and signature of sylvania 5998A
To the best of my knowledge, only GE manufactured the straight-bottle 5998A. On the other hand, the coke-bottle 5998 was manufactured by Chatham/Tung-Sol. And then there is Western Electric's 5998, more commonly labeled as a 421A. Some folks think the 421A was manufactured by Chatham for Western Electric, while others think Western Electric manufactured the 421A in-house. I don't know...
 
Jul 6, 2017 at 1:38 PM Post #3,895 of 9,562
Hello,

Thank you i have see this and other stuff about 5998a physical differences between sylvania and tung sol ( and others). But well not many review about SQ.

Appart my opinion, I'd like to have some others peoples opinion that my one.

Regards,
 
Last edited:
Aug 21, 2017 at 9:56 AM Post #3,897 of 9,562
Sep 4, 2017 at 10:37 PM Post #3,899 of 9,562
All that I have seen, including the one I have, are labeled Raytheon 6080WB. And yes, it looks like a Bendix, with the ceramic spacers and metal bracing, but black metal plates, instead of graphite. As mine has halo getters and yours has rectangular getters, yours is likely older than mine. Unfortunately, I have only the one, so I have no idea how it sounds....

2017-09-04 22.32.42.jpg
 

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