[Lorspeaker]

http://pacifictv.ca/pixs/eiatubecodelist.pdf
 
a list of the brand codes

 

[rosgr63]

Very handy reference for sure.

 

[Stereolab42]

  Any thoughts on the Sophia 6SN7 vs the CV181-Z Shuguang Treasures for a WA22? I'm running CV181-Z with Tung-Sol 7236 and Sophia Princess mesh plate. I got my BTs from http://www.ebay.com/itm/220860592075?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT but I'm intrigued by the Sophia 6SN7s. I know the Brimars are generally held in higher regards, but I'm not interested in those.

 
The Sophia 6SN7 is great on the WA22. There are surely NOS tubes for the same price that are just as good, but like to feel I'm supporting a modern tube producer who's quickly figuring out how to match the old stuff in quality. Because eventually the old stuff will run out...

 

[Badas]

   
The Sophia 6SN7 is great on the WA22. There are surely NOS tubes for the same price that are just as good, but like to feel I'm supporting a modern tube producer who's quickly figuring out how to match the old stuff in quality. Because eventually the old stuff will run out...

 
A nice looking tube as well.

 

[TonyNewman]

   
The Sophia 6SN7 is great on the WA22. There are surely NOS tubes for the same price that are just as good, but like to feel I'm supporting a modern tube producer who's quickly figuring out how to match the old stuff in quality. Because eventually the old stuff will run out...

 
+1. If this hobby has a future, it is with new production.

 

[Badas]

Curious about this tube 6SJ7GT Sylvania
 

 
Very nice looking tube. No idea what it sounds like tho. Or if it works as a driver tube in a 6SN7 amp.

 

[Skylab]

Curious about this tube 6SJ7GT Sylvania

Very nice looking tube. No idea what it sounds like tho. Or if it works as a driver tube in a 6SN7 amp.

It's absolutely nothing like a 6SN7. The 6SJ7 is a sharp-cutoff pentode, whereas the 6SN7 is a dual-triode.

If you put a 6SJ7 in an amp designed for a 6SN7, you won't get sound, but you might get a very spectacular pyrotechnics show.



Maybe a bit of a review/warning is needed. Here is what you can always safely use in an amp that calls for a 6SN7:

6SN7GT, 6SN7GTA, 6SN7GTB, 6SN7W, 6SN7WGT, 6SN7WGTA, 6SN7GTY, CV1988, VT-231, 5692.

There are amps made which will allow some cousins like the 6SL7/5691/VT-229/6SU7, and even a few that will allow the 6BL7. But one MUST check with the amp maker first. Same with the UK CV181/ECC32 and ECC33 - many times OK but you need to check with the amp maker first.

There are adapters made that will allow the use of a 6F8G, and a 6CG7 (two different adapters).

That's pretty much it, folks.

 

[Badas]

I seriously want to dull down my amp. I should explain a bit better. I want to roll of the treble. A lot. I'm not a fan of high treble.
 
I don't really want to effect soundstage, mid range or bass.
 
If I was going to do this what top 3 6SN7 type tubes would members recommend?
 
Please give me ya top 3 rolled or lazy treble tubes?
 
Dono

 

 

[TonyNewman]

  I seriously want to dull down my amp. I should explain a bit better. I want to roll of the treble. A lot. I'm not a fan of high treble.
 
I don't really want to effect soundstage, mid range or bass.
 
If I was going to do this what top 3 6SN7 type tubes would members recommend?
 
Please give me ya top 3 rolled or lazy treble tubes?
 
Dono

 
Just curious - do you have a rough idea how many hours you have on your (new) amp?
 
Reason I ask is that amps tend to mellow out significantly in the first 100 to 150 hours in my (limited) experience. If you haven't clocked at least that much runtime on your amp I would suggest waiting a while - you might be trying to fix a problem that goes away by itself.

 

[Badas]

   
Just curious - do you have a rough idea how many hours you have on your (new) amp?
 
Reason I ask is that amps tend to mellow out significantly in the first 100 to 150 hours in my (limited) experience. If you haven't clocked at least that much runtime on your amp I would suggest waiting a while - you might be trying to fix a problem that goes away by itself.

Yeah, I get what you are saying. My amp and tubes are very very young.
 
However I cringe. Treble is so high. I am very sensitive to treble. The whole system would have to drop 30% for my taste and I can't see it doing that.
 
So I would rather have a list of tubes to hunt down now and get early so I can start breaking them in.

 

[TonyNewman]

 
Yeah, I get what you are saying. My amp and tubes are very very young.
 
However I cringe. Treble is so high. I am very sensitive to treble. The whole system would have to drop 30% for my taste and I can't see it doing that.
 
So I would rather have a list of tubes to hunt down now and get early so I can start breaking them in.

Gotcha - I get it

 

[Stereolab42]

Badas, you need to use software EQ if you need to drop the treble by that much. Good amps and good tubes are specifically designed not to do what you're asking.

 

[Badas]

  Badas, you need to use software EQ if you need to drop the treble by that much. Good amps and good tubes are specifically designed not to do what you're asking.

Yeah, I can't do that. I'm not using a computer. iPod and Oppo Blu-ray player for CD/SACD/DVD Audio only.

 

[Stereolab42]

 
Yeah, I can't do that. I'm not using a computer. iPod and Oppo Blu-ray player for CD/SACD/DVD Audio only.

 
Bummer. You need to go completely PC audio like many have. Or use this:
 
http://www.sweetwater.com/store/detail/MassivePassive

 

[Neogeo333]

Or try cables that are known to have a warm sound.  Use copper cables as it tend to sound warmer than silver cables.  Like other have said only a software eq is the other solution.  
 
Of tubes that I know sounds warmer sound signature are Ken Rad black glass, VR102, Mullard ECC32 those come to mind.