[mordy]

Hi UT,
 
What do you think about this: Maybe the RCA tube you have was made by Sylvania/Philips? Any EIA code on the tube?

 

[nephilim]

Well, I'm still in awe - the 5998 really removed 95% of the hum which was haunting me for the past weeks... months! They clearly lift off a veil such that the music really shines. Powerful, deep bass and improved clarity. Beautiful treble without harshness, superb detail... I've fallen in love! And I would say that the improvement is similar to the step ahead that came with the C3g and/or the ECC31. I seriously consider selling some of the tubes I've purchased since the Elise adventure began.

 

[UntilThen]

I have no clue whether it's made by Sylvania. Maybe Mr Tube Oskari or Gibosi can tell us
 
All it says is RCA NR AAA   6AS7GA  U.S.A
 
A better picture
 

 

[mordy]

Hi UT,
 
More confusion LOL - here is another RCA version of the 6AS7GA:
 

 
This one doesn't look like either the GE or Sylvania(?)

 

[UntilThen]

It does look like my GE 6AS7GA picture on page 3.
 
There...
 

 

[UntilThen]

  Well, I'm still in awe - the 5998 really removed 95% of the hum which was haunting me for the past weeks... months! They clearly lift off a veil such that the music really shines. Powerful, deep bass and improved clarity. Beautiful treble without harshness, superb detail... I've fallen in love! And I would say that the improvement is similar to the step ahead that came with the C3g and/or the ECC31. I seriously consider selling some of the tubes I've purchased since the Elise adventure began.

Nep I feel the same way too. Sell all the other power tubes but the 5998 cost a bomb.

 
How does 5998 with ECC31 sound? That's what I'll be using in mine.

 

[nephilim]

I'm using the ecc31 right now. I'm sure you'll love that combination at least as much as I do.

 

[UntilThen]

Try a pair of GE 6AS7GA for $20. You'll be surprised.
Value for money stakes it's unbeatable.

5998 is a different category imo. Everything is just lifted like you say as if a veil has been removed. I hate to give this tube more praise than what it already has been given. Will only inflate price more.
I dare not even think what the GEC 6AS7G will sound like at 3 times the price of 5998.

 

[hypnos1]

Try a pair of GE 6AS7GA for $20. You'll be surprised.

Value for money stakes it's unbeatable.

5998 is a different category imo. Everything is just lifted like you say as if a veil has been removed. I hate to give this tube more praise than what it already has been given. Will only inflate price more.
I dare not even think what the GEC 6AS7G will sound like at 3 times the price of 5998.

 
Heaven, UT...sheer heaven...

...
 
And goodnight...

 

[Oskari]

  A new mystery pair of tubes arrived - 6AS7GA Electronic Enterprises:
 

 

  Almost identical to my RCA 6AS7GA except for the branding.
 

 
Those are 6080s. (Somebody just wanted to call them 6AS7GAs.)
 

  What do you think about this: Maybe the RCA tube you have was made by Sylvania/Philips?

 
Looks like it.

 

[JazzVinyl]

New to me Tubes have arrived:
 
Pair 1970 Mullard 6080's NOS made in the UK Mitcham factory.
 
One good ECC31
 
Pair Ken Rad VT-231 w/clear tops, bottom getters.
 
Have compared ECC31 to GM branded 6N7G (in ST envelope).
 
Pretty sure I have a conclusion, but will wait a couple of days and listen to a wide variety of sources and genre's before I make any proclamations.
 
Cheers to all in here...
 
--JV--

 

[Oskari]

  Maybe Mr Tube Oskari or Gibosi can tell us

 
Hey, gibosi, why don't you take the next question?  

 

[UntilThen]

How's this for size. 

 
Left to right. 
 
RCA 6AS7GA (which you say is 6080), HP 6080, Dumont 6080WA and Mullard CV2984 / 6080.

 

[UntilThen]

  New to me Tubes have arrived:
 
Pair 1970 Mullard 6080's NOS made in the UK Mitcham factory.
 
One good ECC31
 
Pair Ken Rad VT-231 w/clear tops, bottom getters.
 
Have compared ECC31 to GM branded 6N7G (in ST envelope).
 
Pretty sure I have a conclusion, but will wait a couple of days and listen to a wide variety of sources and genre's before I make any proclamations.
 
Cheers to all in here...
 
--JV--

Very nice tubes there JV. I suppose you're testing ECC31 / GM 6N7G compared to a pair of GM 6N7G.

 

[JazzVinyl]

  Very nice tubes there JV. I suppose you're testing ECC31 / GM 6N7G compared to a pair of GM 6N7G.

 
Yes, I have wondered if the 6N7G's (in ST Envelope),  that I think sounds so nice, compares favorably, to the the more expensive, and more difficult to obtain ECC31.
 
.