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6SN7 Tube Addicts
Aug 24, 2011 at 10:05 AM Post #1,141 of 7,413
Zaerix definitely made NO tubes.  100% rebrander.  Some of their tubes were made by Mullard and other UK makers, and were very nice.  Some were Russian.  Some were Japanese.  It's always a crap-shoot.  David, those ones in that auction you liked to are the exact same tube as the "Ultron" branded 6SL7GT's I sent you (which are also Russian).  Check it out
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I agree with Stavros.  The Russian 1578 never impressed me.  I think it's way overpriced.  I still have one left that I should really sell.
 
Aug 24, 2011 at 10:12 AM Post #1,142 of 7,413
I spent some more time with the new Sovteks -- they are nice and mellow which worked nicely with old jazz recordings but they are too mellow for, say, rock. 
 
Aug 24, 2011 at 8:05 PM Post #1,143 of 7,413


Quote:
dminches said:
Thanks.  I have a bunch of Mullards and a quad of Fivres (which I haven't listened to yet).
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Dam! I want  a pair of 6SN7 Fivre!!
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Aug 24, 2011 at 8:43 PM Post #1,144 of 7,413
I read somewhere that Fivre and RCA had a relationship with respect to tube manufacturing and maybe design.  Does that mean that the Fivres are similar to some of the RCA production?
 
Aug 24, 2011 at 9:35 PM Post #1,145 of 7,413
I agree that the 1578 tube may not be for everyone.

However in my WA5 driving WE300B they outperform the Tung Sol BGRP in terms of resolution and overall drive.

I could see that if the other tubes used with it are on the dry analytical side that the 1578 would not be a good match.

 
Aug 25, 2011 at 2:08 AM Post #1,146 of 7,413


Quote:
dminches said:
I read somewhere that Fivre and RCA had a relationship with respect to tube manufacturing and maybe design.  Does that mean that the Fivres are similar to some of the RCA production?
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Actually I would say the ATES are closer to RCA, I have some which state under license from RCA.
 
There are so many variants you'll be surprised.
And they do sound so different, some combining the wonderful British sound with some extra qualities.
 
Your Quad are 6SL7, if you look at the labels and tell me what they look like I might be able to help a bit more. 
 
Aug 25, 2011 at 5:14 AM Post #1,147 of 7,413
Quote:
vinyllp33 said:
I agree that the 1578 tube may not be for everyone.

However in my WA5 driving WE300B they outperform the Tung Sol BGRP in terms of resolution and overall drive.

I could see that if the other tubes used with it are on the dry analytical side that the 1578 would not be a good match.
 
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I have used them with various releases of GEC, MWT and Osram 6AS7G as well as various 300B's and PX4's, which I don't think are dry or analytical and still don't like them in my systems I am afraid.
On the other hand Kiertijai reported Craig Uthus thougt they were nice. And so do many others.
Sound preferences are so personal and varied.
My comments apply to my systems and ears only.
 
 
 
Aug 25, 2011 at 10:26 AM Post #1,148 of 7,413
[size=10pt]I am not a fan of these Russians either, they have a very good low end, but the rest isn't that interesting, but most important, the total picture, which I found not musical enough to get them on my list. [/size][size=10pt]Becides, they are very expensive, imo.[/size]
 
Aug 25, 2011 at 8:10 PM Post #1,149 of 7,413
Not to mention finding a "real" 1578 is not easy.

More often than not the majority I see listed are just standard metal base 6H8C with a fake stamp.

Those are vastly inferior and really shouldn't be compared.

But yes, it is all about system synergy and personal preference.
 
Aug 31, 2011 at 1:18 PM Post #1,151 of 7,413
I would say 200 hrs as a start for the 5692.
 
Here is an interesting Cossor tube:
 

 
Sep 1, 2011 at 2:28 PM Post #1,154 of 7,413
Came with the Wheatfield Audio HA-2. Most warm and luscious sound.  Anybody knows about this tube?
 

 
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