Internal photos from the fcc website https://fccid.io/document.php?id=6011065

Id be interested in knowing what he paid as well. Best price I can find is $620 for a NOS pair. This is Telefunken CCA kind of money. Currently I use Siemens CCA (A-frame, grey plate 1960's) with Western Electric 421A. I have all the rest of the highly rated output tubes (GEC 6080 & 6AS7G, Tung...

Woo Firefly with dac and tube power supply.

For ****s & giggles I thought id try my sennheiser ie800 in my WA2 and IMGAwd! It sounds amazing!

Sounds like a bad amp (caps or transformer can cause hum). Should never have any hum in any audio gear period regardless of brand make or model! Hiss is from your tubes. I had a bad CCA driver tube that was giving me hiss once.

maheeinfy, Woo audio has excellent customer service. If you have concerns or problems with your amp just email or call him! He will put you at ease trust me. They are a small mom & pop type operation and care a great deal for their customers and about their customers. As to the difference of the...

Just because they are the same pinout DOES NOT MEAN they are meant to be used in the WA2! These tubes specifically are used in FM tuner stages (they are RF tubes). They are not meant for audio driver stage tubes! You really think a $5 in a $1200 amp is going to sound that good?

You mean 6922 to 6SN7 adapters? What headphones are you using and what type of sound are you after?

No the 421A are not the ones that require the adapter. That is the 6SN7GT.

Silly rabbit! 6SN7GT are not rectifiers! They are dual triodes! They would replace the 6922/E88CC tubes. And the Tung-Sol 5998 are garbage! I own those, the GEC 6080 & 6AS7G and the WE 421A. The Tung-Sol are the worst of the bunch! The WE 421A are the best hands down. Best bass, best soundstage...

Well if he wants truly serious bass than he needs to buy 6SN7 to 6922 converters and a pair of KENRAD Staggered Plate 6SN7GT. You can get the converters directly from WOO ($40 each + shipping).

If all you want is sub bass rumble, sell the WA2 and buy some crappy beats headphones and a BOSE stereo!

CCA or Sylvania 6SN7GT? And no dont even think about recommending those ridiculous russian e88cc knockoffs. I have a strict rule of no russian or chinese tubes in my house! I dont care how good you claim they sound, im not buying it! Theyre GARBAGE!

Where are all the Brimar ez80 tubes hiding!? Anyone have a good pair for sale?

Hopefully you paid with paypay. File a dispute claim or if you just paid directly with a credit card open a fraud claim with them! You will get your money back. Usually its guarnteed when its a russian seller.

I had no idea you could use the 6SN7 type tubes in the WA2 with an adapter! OK adapters on order. Now what are the best price no object holy grail 6SN7 type tubes you can get? You know the ones you'd sell a kidney for.

The telefunken ecc308s are 12ax7 equivalents. They are for a jolida jd9 phono stage I have. The tung sol 5998 dont sound very good at all. They sound nothing like the WE 421A. Another good choice is the GEC 6080.

Yes. My e88CC are incredible. Ive been meaning to pick up some CCA like yours but im saving for some telefunken 308S tubes. The GEC tubes you have are great sounding but i highly reccommend getting some Western Electric 421A. Here is my WA2

Yup, definetly 1960's tubes. Hopefully you'll get a pair without any noise. I have those exact tubes you bought but the e88CC version of them. The CCA I have are the later 1970's non a-Frame ones. They suck.

Post a picture of the tubes you are asking about. You can tell what year by what the look like also.

I agree, don't buy any of the NOS tubes Woo sells! They are all junk!. For the Woo WA2 there is only 1 option. Siemens CCA (or E88CC). Get the 1960's grey shield A frame. Than get either the GEC 6AS7G or Western Electric 421A. Anything else is less than the best so like you said...why buy NOS...

Oh look what the cat dragged in! What's in the box? What's in the box?!? Western Electric 421A

Yes the Western Electric 421A/5998 are the same tubes (they did label them 421A/5998 in the 1950's). But the Tung Sol 5998 IS NOT A WESTERN ELECTRIC 421A!!!

Woo Audio WA2 (GEC 6AS7G, Siemens CCA, Rft EZ80), Rotel RCD-971 (modifed with super clock & opamp upgrade), Rotel RT-1080, iPod Classic, Airport Express (for streaming itunes from mac pro server), Sennheiser HD 650 & HD 800, Audeze LCD-3.