[MD80]

Hi! Need some help here. I have my first tube amp, an inexpensive Little Bear P7. It came with a chinese 6N5P tube, that I would like to upgrade. I have a chance to get a Haltron 6AS7G but I'm not sure nor the compatibility nor the quality (despite being "made in England")

What do you think?

Thanks!

 

[gibosi]

a Haltron 6AS7G but I'm not sure nor the compatibility nor the quality (despite being "made in England")

Sorry to disappoint, but that tube was not made in England. It was likely made in the USSR. That said, it is essentially the same as the 6N5P and should work fine. But the Haltron box doesn't make it worth a premium price. lol

 

[MD80]

Sorry to disappoint, but that tube was not made in England. It was likely made in the USSR. That said, it is essentially the same as the 6N5P and should work fine. But the Haltron box doesn't make it worth a premium price. lol

Thanks for the head up! It is what is written on the box , haha. But it is pretty inexpensive (around 10 USD) Do you think is worth to try? I mean, any improvement in the sound is welcome. Other option I have, is this one

 

[gibosi]

It is important to remember that audio is extremely subjective. It really comes down to personal preferences and system synergy. So while many turn their noses up at the Russian 6AS7, in some systems it sounds surprisingly good. So for $10, I would say it is certainly worth a try.

I don't know who manufactured the 6080, but it looks like Raytheon or perhaps RCA. Again, if it is cheap, it's worth a try.

 

[adeadcrab]

Russian 6AS7G (6H13C) are a solid all-rounder.

 

[Monsterzero]

Has anyone had the pleasure of comparing the following tubes?

5998
GEC 6080
GEC 6a7g
Bendix 6080wb

Im looking to buy one pair of high end power tubes and want to make the best buy I can.

Mainly interested to know how each would rank vs the others in:
Depth
Width
sub bass extension
bass tightness
air.

 

[gibosi]

Bendix 6336wb

Bendix 6336WB? Perhaps you mean Bendix 6080WB? And there are a number of different versions of this tube, but many think that those with slots sound better than those without.

As to your question, I will simply repeat my standard response: It depends on personal preferences and system synergy. When comparing these tubes, it is not black and white, none of them are the "best". They are all superb, just different shades of gray. And some prefer one shade of gray over the others...

 

[mordy]

Has anyone had the pleasure of comparing the following tubes?

5998
GEC 6080
GEC 6a7g
Bendix 6336wb

Im looking to buy one pair of high end power tubes and want to make the best buy I can.

Mainly interested to know how each would rank vs the others in:
Depth
Width
sub bass extension
bass tightness
air.

You probably mean the Bendix 6080WB.

 

[Monsterzero]

Yes,I meant the 6080wb... you guys should know by now I tend to mixup my numbers.

 

[leftside]

I seem to remember reading that the curved base came before the straight base for the GEC 6AS7G? I've got tubes with date codes where the straight base comes before the curved base:

KB 4 date code. 'D' getter (all other's I've seen have an inverted saucer getter), Curved base:

LE 4 date code. Straight base. So far, so good. 'L' being later than 'K':

SB Z = back to curved base again. Different factory ('Z' not '4').

TD Z curved base:

TL Z and XH Z straight base:

Maybe they simply used whatever bases were available....

 

[mordy]

I seem to remember reading that the curved base came before the straight base for the GEC 6AS7G? I've got tubes with date codes where the straight base comes before the curved base:

KB 4 date code. 'D' getter (all other's I've seen have an inverted saucer getter), Curved base:



LE 4 date code. Straight base. So far, so good. 'L' being later than 'K':



SB Z = back to curved base again. Different factory ('Z' not '4').



TD Z curved base:



TL Z and XH Z straight base:



Maybe they simply used whatever bases were available....

I seem to remember that people claim the curved base sounds better, but I have no way of verifying it.
What is your impression of the differences between in sound of these tubes, if any?

 

[leftside]

I seem to remember that people claim the curved base sounds better, but I have no way of verifying it.
What is your impression of the differences between in sound of these tubes, if any?

They all sound about the same to me @mordy

 

[mordy]

They all sound about the same to me @mordy

Thanks - that's what I thought.
I have one "near" pair - an Osram and a GEC but they look and measure almost the same. Of course, for photo ops I only show the GEC label lol......
The Osram has no visible codes at all, but the GEC says RK Z which means Hammersmith Factory, October 1960. Here is a link to a useful date code chart:
https://dalmura.com.au/static/MOV GEC date coding.pdf

 

[leftside]

Thanks - that's what I thought.
I have one "near" pair - an Osram and a GEC but they look and measure almost the same. Of course, for photo ops I only show the GEC label lol......
The Osram has no visible codes at all, but the GEC says RK Z which means Hammersmith Factory, October 1960. Here is a link to a useful date code chart:
https://dalmura.com.au/static/MOV GEC date coding.pdf

Those looks like the same tubes, just different stickers. You don't see them with the Osram sticker very often. Very nice.

Scratch the stickers off, and they'll be the same tubes

 

[cddc]

The prices of GEC 6SN7G, WE 421A, Tung Sol 5998 are becoming ridiculous now....

Just came across this thread and found lots of amps are competing for these tubes, DarkVoice, LF339, WA22....and my Crack /w speedball.

What makes it worse, LF339 and WA22 both require a pair of these tubes - must be a pita to buy a matched pair, I guess....LOL