[billerb1]

  Well, I got a pair of NOS Sylvania 7236 matched for 60$, so that is 1/3 of the price I would have paid for TS 5998. And some Siemens E88CC with gold pins for 120 $. Hope that will do the trick. Are the rectifiers a must or is stock decent?
 
I can get some Ei EZ80 for 35 $ a pair.

The RFT EZ80's are great rectifiers and are cheap...can get a NOS pair sometimes for $20 on ebay.

 

[dany111777]

 
The RFT EZ80's are great rectifiers and are cheap...can get a NOS pair sometimes for $20 on ebay.

I found NOS RFT Ez80 at 5$/piece. 5 of them. Must they be matched?
And also NIB Tesla EZ81 at 5$/piece. 16 of them. Must they be matched?
 
Thanks

 

[billerb1]

  I found NOS RFT Ez80 at 5$/piece. 5 of them. Must they be matched?
And also NIB Tesla EZ81 at 5$/piece. 16 of them. Must they be matched?
 
Thanks

My experience is that a lot (most?) of tube sellers don't match these.  I'm not sure if it's absolutely necessary...I've heard both pros and cons.  I would think you'd be fine with any pair of rectifiers if both were considered NOS.  But then again I'm no tube expert and I'll be interested too in what others responses might be to your question.

 

[dany111777]

And another issue:
 
 
Of the 2 Siemens e88cc, 1 is 80/80 and the other 70/80. Is that a problem?

 

[StanT]

  I found NOS RFT Ez80 at 5$/piece. 5 of them. Must they be matched?
And also NIB Tesla EZ81 at 5$/piece. 16 of them. Must they be matched?
 
Thanks

Rectiifiers aren't generally matched ( I don't know why). Tesla EZ80 are blah, I can't speak to EZ81s. RFT EZ80s are very good.

 

[Chesterfield]

Rectifiers aren't matched because they're not directly on the signal path, unlike power and driver tubes (which also explains why rectifiers don't affect sound nearly as much as power and driver tubes).

 

[Dubstep Girl]

I had the NOS tesla's and i much preferred the RFT. The RFT EZ80 are really good. I've heard good things about Mullard, Brimar, and Ei EZ80 as well. oh and RFT EZ81.

 

[dany111777]

Got some NIB Philips e88cc for 30$/piece. I'm settled. Guess I'll buy a power cord and start to listen.

 

[dany111777]

Has anyone heard 6080 Telefunken? Or 6080 Sylvania? How are they compared to stock (which is GE 6080 now) or to the 7236 Sylvania?
Here's a link.
 
http://www.ebay.com/itm/6080-6AS7W-Telefunken-Rohre-NEU-6AS7-ECC230-Valve-NOS-Tube-amp-/371034837051?pt=DE_TV_Video_Audio_Elektronenr%C3%B6hren_Valves&hash=item566366503b

 

[dany111777]

Man, this thread is dead!!!
 
I'll give it another shot though .... After some burn in, and switching to rft EZ80, Philips e88cc and Sylvania 7236, the muffled sound problem disappeared. But the sound got to piercing highs! I can't listen to it more than an hour, I thought this was supposed to be a TUBE amp.
 
What do you think? I found some Sylvania 6as7GA for sale and some Telefunken 6080. Could it solve the problem? Or is it in the driver/rectifier department?

 

[billerb1]

D, what cans are you using?
I really like the RFT EZ80's for what I listen for thru Beyerdynamic re-cabled T1's.
But they tend a little toward the forward, bright side.  You might see if you can find
any Great Britain made Brimar EZ80's.  More instrument timbre to me and a bit darker than
the RFT's but without losing detail.  Hard to  find but a great tube for me.
I haven't run the 7236's in mine...always the 5998's.  One of the 6AS7A's will take the edge off
the treble for you I would think...but at the price of maybe getting some of that muffled sound back.
Good luck.

 

[Kiats]

Hey guys! I just picked up a Woo Audio 2 a few weeks back and am still new to this whole new world of tube rolling. 

 Any suggestions where I might read up on tubes etc?
 
Thanks!

 

[MIKELAP]

  Hey guys! I just picked up a Woo Audio 2 a few weeks back and am still new to this whole new world of tube rolling. 

 Any suggestions where I might read up on tubes etc?
 
Thanks!

 
http://www.head-fi.org/t/393811/woo-wa2-tube-rolling-recommendations  

 

[Kiats]

Thanks, Mikelap! 

 

[billerb1]

  Hey guys! I just picked up a Woo Audio 2 a few weeks back and am still new to this whole new world of tube rolling. 

 Any suggestions where I might read up on tubes etc?
 
Thanks!

Brent Jessee's page has a lot of info if you  really want to start getting educated...
http://www.audiotubes.com/6dj8.htm
 
and Joe's Tube Lore:
http://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html