[whatcomfalls]

I am going to try Herbies tube dampers as its only 100 bucks. I have nothing to lose!

I'm using Herbies dampers--they don't do anything for a noisy tube. They can help tame a non-severe case of microphonics however.

 

[hornytoad]

I'm using Herbies dampers--they don't do anything for a noisy tube. They can help tame a non-severe case of microphonics however.

Well we shall see. Maybe I have a little too much vibration going on with the socket savers

 

[whatcomfalls]

Well we shall see. Maybe I have a little too much vibration going on with the socket savers

They may help with vibration. I consider tube noise as sputtering, popping, and hissing, which differs from tube microphony

 

[LouS]

Well , this is what the seller said so I’m confused :
If the problem is discontinuous, this is vibration and noise of some transformers in the power.

Not my tubes. Transformers generally take decades to delaminate and make noise. Unless Schiit got a bad batch of transformers I am not buying transformers, especially since they checked it out.

 

[hornytoad]

Not my tubes. Transformers generally take decades to delaminate and make noise. Unless Schiit got a bad batch of transformers I am not buying transformers, especially since they checked it out.

That's what I thought when I read it.

 

[LouS]

"No way that I'd pay $30 for a tube damper. I have used o-rings for years. If you want to experiment, you can fabricate couple of the halo style very easily. I can't see any advantage there; it doesn't really add mass, so it doesn't seem like it would fundamentally change the resonant frequencies or damping vs an o-ring or two. I would like to think that if any sort of tube damper, whether weighted or not, really made a huge improvement in sound, it would be standard equipment inside of high end tube amps such as those by ARC. Most companies that use anything, use an o-ring or a type of wider band that is basically a heavy, silicone grommet. It would become rather economical to add a more advanced type if it made a significant difference, due to the scale of production. The next time that I get around to it, I'll probably look into some larger bands rather than using a couple of o-rings myself. Not sure that there would be a sonic difference but it will only be a few dollar investment for a set."

I tend to agree with the above.

 

[armyjazzer]

Put 4 Shuguang Treasure Cv181-z tubes in. Waiting for them and my Yggdrasil to break in.

Tube Monger has some that fit but is charging $40 for them. You can buy these on ebay cheap:

Sand the outer diameter down a little and they work (cheap belt sander with 50 grit paper gets the job done in no time ):

 

[jseymour]

These work without sanding: http://www.partsconnexion.com/SOCKET-74489.html

 

[hornytoad]

These work without sanding: http://www.partsconnexion.com/SOCKET-74489.html

Yes they work well

 

[KoshNaranek]

CV181 tubes draw 900milliamps heater current. 6SN7 draws 600. Has anyone checked with Schiit if this is within specifications for Freya?

 

[hornytoad]

CV181 tubes draw 900milliamps heater current. 6SN7 draws 600. Has anyone checked with Schiit if this is within specifications for Freya?

Good question

 

[KoshNaranek]

Good question

Upon further research, the Treasure cv181z draws less than a standard CV181. 600 milliamps

 

[winders]

CV181 tubes draw 900milliamps heater current. 6SN7 draws 600. Has anyone checked with Schiit if this is within specifications for Freya?

The Shuguang Treasure Cv181-z tubes are not really CV-181 tubes. They are 6SN7 tubes as far as specs go...

 

[LouS]

CV181 tubes draw 900milliamps heater current. 6SN7 draws 600. Has anyone checked with Schiit if this is within specifications for Freya?

Shuguang calls it a 181, then says it's really a 6SN7, so they are 100% compatible.

 

[LouS]

Man I have had such tough luck with tubes : stock tubes were terrible , Tung-sol new production went noisy after 60 days , now Shuangang Treasure tubes are noisy ( these sound very good and had no noise for about 20-30 days , now all of them are noisy at some point )
Oh well .

I had heard that at first Shuguang Treasures had issues, but supposedly they had addressed them. That was supposedly their first run, but I suspect that yours were purchased more recently, that sucks!