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Woo Audio Amp Owner Unite
Mar 16, 2015 at 10:37 PM Post #33,046 of 42,298
joseph69 said:
  Thank again for the information!
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Did you also purchase your 6F8G's from this seller?
 
Hmm, thanks for the heads-up!
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Yep - so far so good, but I have not tested my latest batch of NUs (4 pairs). Will them a burst in the WA6 tonight.
 
My earlier purchases (2 pairs) were fine with no problems at all.
 
Mar 16, 2015 at 10:45 PM Post #33,047 of 42,298
tonynewman said:
  Yep - so far so good, but I have not tested my latest batch of NUs (4 pairs). Will them a burst in the WA6 tonight.
My earlier purchases (2 pairs) were fine with no problems at all.
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Thanks…its a chance you take when buying NOS tubes from anywhere I would say. I bought almost every tube I own from eBay, and had an issue one time, but the seller and I settled it between ourselves and everything was fine.
If you don't mind, please let me know how the rest of your tubes work out.
Thank you.
 
BTW, anywhere else these are available?
 
Mar 16, 2015 at 10:55 PM Post #33,048 of 42,298
I have 2 pairs arriving any day now. I will also test.
 
Mar 16, 2015 at 11:17 PM Post #33,050 of 42,298
joseph69 said:
  Thanks.
I've checked to see if Langrex sells them, but I don't see them.
Going to check some other tubes store I've purchased from before.
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I sent a email to Langrex a few weeks ago. Nope. Nothing there. He said it was a US only tube. Altho I have seen a Euro tube that was basically a RCA. So they must have used them.
 
Mar 16, 2015 at 11:21 PM Post #33,051 of 42,298
badas said:
  I sent a email to Langrex a few weeks ago. Nope. Nothing there. He said it was a US only tube. Altho I have seen a Euro tube that was basically a RCA. So they must have used them.
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I just checked about 7 tube distributors, and no one has the NU's, but I did find some RCA and Sylvania's, but would like to hear the NU from the comment on H-F.
 
Mar 17, 2015 at 1:48 AM Post #33,052 of 42,298
stereolab42 said:
   
Careful, this guy (vintubes) ripped me off. I bought 8 T-S flat plates from him that were great. Then I bought 8 NUs, they were ALL bad... terrible static at best, headphone-endangering screeches at worst. He refused to honor his own return policy, and I had to escalate the case to eBay before he came to his senses and gave me a refund (and he didn't even want me to send the tubes back... I'll let everyone draw their own conclusions from that.)
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I have given all of my NOS NUs a few minutes in my WA6 this evening - 7 pairs - 6 pairs from Italy and 1 pair from another seller - every one of them sound pretty good right out of the box.
 
These are all NOS tubes, only removed from the box for testing as far as I know. All were free from microphonics, but had some limited harshness and lack of extension ... etc that is to be expected from a fresh NOS tube. There is a hint of the lovely sweetness that NUs deliver in some tubes already. Overall, these are some of the best sounding fresh tubes I have ever come across. Every one of them is an enjoyable listening experience right out of the box on my WA6.
 
I can only guess that you had the awful bad luck to get a bad batch. That is very unfortunate and a bit of a tube lovers nightmare
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Some pics - my 14 NUs stacked up after testing (the 2 empties on the right are still in the WA6):
 

 
WA6 test bed - with the Brimar rectifier it has never sounded so good.
 

 
I have compared 'Used, Tested as New' 6F8G TS RPs against 'Used, Tested as New' 6F8G NUs in the WA6 with the Brimar rectifier - and I generally prefer the NUs.
 
I think this is due to the TS RPs being a more neutral driver, and when paired with the subtle Brimar rectifier I find it lacking a little colour for my tastes. Still a stunning listen, and it takes my WA6 far beyond what I thought were its limits, but the NUs deliver some sweet magic that makes the experience something else again. Vocals on the NUs are just big mugs of velvety loveliness. Yummy.
 
With a rectifier that brings more colour to the table the TS RPs would be hard to beat. Either driver tube is a class act and will turn your audiophile crank with ease.
 
Once I get my WA5 back next week, hopefully together with some ER300Bs, I will do some more A/B with the 6F8G TS RPs and NUs. Tough job, but someone has to do it
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Happy Listening
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Mar 17, 2015 at 4:12 AM Post #33,053 of 42,298
^

Wicked. :gs1000smile:
 
Mar 17, 2015 at 9:15 AM Post #33,054 of 42,298
Just a note, I have not bought any tubes from that particular guy, but when I got my second pair of NU VT-99, I did think it was a bad pair at first. I listened for maybe an hour, some horrible harshness, a bit of screeching, so I just put them away, was disgusted with the purchase. However, I wanted to give them 10 hours or so before I returned them, and I have since passed that 10 hours, and they are doing just fine. A lot of the bad things just went away with another hour or 2, and now, they are near dead silent. I will say, the pins are a bit picky, I have to move one of them around a bit, otherwise it finds a way to induce some scratching sounds.
 
To be expected with very old tubes though. So give the NU a bit of time before you judge them. You might have also really gotten a bad batch. No matter what quality anything is, there is always a bad one or 2 when you make a ton of it.
 
edit: Very jealous of your collection Tony. Glad you are getting the elrogs :) Very interested to see which of the NU or TS you prefer with them.
 
Mar 17, 2015 at 2:11 PM Post #33,057 of 42,298
porteroso said:
  Just a note, I have not bought any tubes from that particular guy, but when I got my second pair of NU VT-99, I did think it was a bad pair at first. I listened for maybe an hour, some horrible harshness, a bit of screeching, so I just put them away, was disgusted with the purchase. However, I wanted to give them 10 hours or so before I returned them, and I have since passed that 10 hours, and they are doing just fine. A lot of the bad things just went away with another hour or 2, and now, they are near dead silent. I will say, the pins are a bit picky, I have to move one of them around a bit, otherwise it finds a way to induce some scratching sounds.
 
To be expected with very old tubes though. So give the NU a bit of time before you judge them. You might have also really gotten a bad batch. No matter what quality anything is, there is always a bad one or 2 when you make a ton of it.
 
edit: Very jealous of your collection Tony. Glad you are getting the elrogs :) Very interested to see which of the NU or TS you prefer with them.
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I gave some of the bad ones I bought more than 24 hours burn-in with no change (the ones that weren't attempting to actively damage headphones, that is). I'm glad other people are happy, but it did not work out for me with that seller.
 
Mar 17, 2015 at 4:22 PM Post #33,060 of 42,298
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