[abvolt]

  In your opinion are these the best tubes for the WA7tp? Is there info somewhere with comparisons?

 
I like  these the best I also like to use a pair of vintage Siemans 5814A's very clean sound, and the bass is in a word awesome really worth trying..
 

   
Are you guys using matching Tubes for the WA7 and WA7tp when tube rolling? Which makes the most impact on the sound.. rolling the WA7tp tubes or the WA7 tubes?

 
I only use matched pairs..

 

[rage3324]

   
I like  these the best I also like to use a pair of vintage Siemans 5814A's very clean sound, and the bass is in a word awesome really worth trying..
 
 
I only use matched pairs..

 
Do you mean you are using the same tubes for the WA7tp and WA7?

 

[abvolt]

No the amp (WA7) uses different tubes then the power supply (WA7tp). The amp by choice from Woo uses a 6C45 tube, There are variants of this tube but they are very rare and very costly.
 
You can take a look at this read for more info -->http://www.diy-audio-guide.com/6c45.html
 
Never swap tubes from amp to ps..

 

[malla1ml]

  No the amp (WA7) uses different tubes then the power supply (WA7tp). The amp by choice from Woo uses a 6C45 tube, There are variants of this tube but they are very rare and very costly.
 
You can take a look at this read for more info -->http://www.diy-audio-guide.com/6c45.html
 
Never swap tubes from amp to ps..

Hey abvolt, have you ever tried any of the variants mentioned in the article?  Thanks btw, I was looking for this the other day and couldn't find it.
 

There are several brands now for this tube, Reflektor, Sovtek and Electro Harmonix. There are similar substitute tubes out in the market, like the EC8020, EC8010, 3A167M, 437A, 417A/5842 and etc that could be used but they will give you different output power and gain. 6C45 is one of the cheapest among all mentioned above. So, this is a good tube to start with, and if one wishes for more exotic brand and maybe unique brand sound, they can try the above varieties.

 

[abvolt]

  Hey abvolt, have you ever tried any of the variants mentioned in the article?  Thanks btw, I was looking for this the other day and couldn't find it.
 

 
I was thinking of trying a pair of these -->https://www.tubedepot.com/t/tubes/preamp-tubes/417a-5842
Not the 175. ea tubes a little too rich for me. 
 
edit; I've looked on getting a pair but can only find 1 vintage rca

 

[malla1ml]

   
I was thinking of trying a pair of these -->https://www.tubedepot.com/t/tubes/preamp-tubes/417a-5842
Not the 175. ea tubes a little too rich for me. 
 
edit; I've looked on getting a pair but can only find 1 vintage rca

Yeah, looks like there are some pairs on eBay.  I might follow the search and see if I can't get a decent deal on a pair eventually.  I'll do some digging and see if I can't find some impressions on them. I assume based on the price, they must do fairly well (or at least I'd hope lol). 

 

[rage3324]

Thanks for the information about tubes. I ordered the WA7 and WA7tp to replace my little dot i+ and maybe my dacmini (undecided if I will use that as a dac for my WA7 or not). I am going to wait a few months before I start rolling tubes ( I already know how addictive it can be ) and instead focus on upgrading my headphones 
 
Does anyone have experience with Grado RS1 or 325i (currently own) with the WA7? I am also trying to find a large soundstage can to pair with the WA7 to compliment my Grados. Something that still has good mid and vocal presence and sharp highs. The AKG K7xx did not come close to what I was looking for. 

 

[olegausany]

Thanks for the information about tubes. I ordered the WA7 and WA7tp to replace my little dot i+ and maybe my dacmini (undecided if I will use that as a dac for my WA7 or not). I am going to wait a few months before I start rolling tubes ( I already know how addictive it can be ) and instead focus on upgrading my headphones 
 
Does anyone have experience with Grado RS1 or 325i (currently own) with the WA7? I am also trying to find a large soundstage can to pair with the WA7 to compliment my Grados. Something that still has good mid and vocal presence and sharp highs. The AKG K7xx did not come close to what I was looking for. 

Not sure about sharp highs but you should try HD650 and HD700 to start from

 

[abvolt]

  Thanks for the information about tubes. I ordered the WA7 and WA7tp to replace my little dot i+ and maybe my dacmini (undecided if I will use that as a dac for my WA7 or not). I am going to wait a few months before I start rolling tubes ( I already know how addictive it can be ) and instead focus on upgrading my headphones 
 
Does anyone have experience with Grado RS1 or 325i (currently own) with the WA7? I am also trying to find a large soundstage can to pair with the WA7 to compliment my Grados. Something that still has good mid and vocal presence and sharp highs. The AKG K7xx did not come close to what I was looking for. 

 
That good news you'll love the Woo, I don't have the RS1,s but my ps500's sound really good I'm sure your RS1,s will be just as good. Most of the music I like is jazz but for my classical collection the Grado's are my favorites.

 

[dL.]

  I got mine from Upscale Audio here's a look --> http://www.upscaleaudio.com/mullard-cv4003-12au7-vintage-new-old-stock/

What's the difference between this one and http://www.upscaleaudio.com/mullard-ecc82-12au7-vintage-new-old-stock ?
 
One is CV4003 and the other is ECC82. Are both compatible?
 
dL

 

[malla1ml]

 
What's the difference between this one and http://www.upscaleaudio.com/mullard-ecc82-12au7-vintage-new-old-stock ?
 
One is CV4003 and the other is ECC82. Are both compatible?
 
dL

If you look at the description, the first link's tubes were manufactured in the UK.  The second link were manufactured in India.  Both are supposed to be great.  I also picked up a pair from the first link.

 

[dL.]

Ah got it. Just want to clarify, you need to choose quantity "2" to get a pair on that Upscale Audio website?
 
dL

 

[abvolt]

 
What's the difference between this one and http://www.upscaleaudio.com/mullard-ecc82-12au7-vintage-new-old-stock ?
 
One is CV4003 and the other is ECC82. Are both compatible?
 
dL

 
The CV4003 is only a military inventory number it also denotes there grade type. Mullards CV4003/12AU7 are made in England and the CV4003 were sold to the military, they needed to be a very heavy grade tube the best they could get for there applications.
 

The ECC82/12AU7 is a more standard tube it was also made in India (if your talking mullards) not to the same high standards the military required as with the CV4003, they are made by many makers including mullard.
 
You can use either of these great variants..

 

[abvolt]

  Yeah, looks like there are some pairs on eBay.  I might follow the search and see if I can't get a decent deal on a pair eventually.  I'll do some digging and see if I can't find some impressions on them. I assume based on the price, they must do fairly well (or at least I'd hope lol). 

 
Yeah that info would be nice, let us know what you find out. heres some  history on the mullards --> http://www.gracesguide.co.uk/Mullard

 

[desertblues]

I am currently running a matched pair of the Mullard ECC82 - they were made in Britain in 1964 at the Blackburn factory. They are awesome in the WA7tp! I would think a similar tube from India was most likely made under license from Mullard and may differ in quality. I paid $140 for a matched pair from Brent Jessee who is very reputable in my experience.