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I am not a fan of the 50. The 50 was made for a very short time (Alan Douglas who knew more about tubes than any human on the planet) had an article on them in Sound Practices. I think his comment...

Fun with a tesla coil: https://www.youtube.com/watch?v=SlNGKly09CQ&feature=related Not sure anything else out there gets to 1,000,000 volts. Just make sure to observe from inside the Faraday...

Assuming you have a newer big 7 that takes 1 5-volt rectifier, the 422A will slide right in and work.

They look right structure wise, but are there any date codes on the glass or base? The getter flashing is the least amount I have seen on one of these tubes. It looks right though.

Good luck. Just remember, I did not love them with my 300B output tubes. Put in 275As and it sounded heavenly. With the 300Bs, it was just too accurate. Became sterile.

I have seen some tube failures with my DIY experiments, so I am not so scared. But the smell of a resistor burn out gets me. Anyway, I think the sound of thoriated tungsten is really what drives...

In my research I found this: ...

IMHO, Tak 300Bs are the closest to WE 300Bs out there now. I have not heard ElRogs and have not owned Taks, but I have now spent time with them. They are great.

I am going to first apologize for being methodical here.It is how I approach most things and usually, if you wade through it, you will learn something that you may be able to use to win at trivia,...

They are my favorite output tubes.

Got a pair of UV71 rectifiers recently. Basically Westinghouse Canadian U52s. They are next on the testing list.

I use Roon with HQ Player. Blows everything else away.

Never heard of a microphonic rectifier. That said, I have not used much more than my ears to test the sound.

Here is the Oldway STC labeled version. This is what you appear to have.
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As I understand it, Footscray all had D getters (one on each side). See the getter on the attached. Oldway has the round getters. I like those tubes...

I need good pictures of the getter and the support bars at the top below the mica. Brimar rose out of STC. Same maker. Factory is getter specific. Footscray is earlier. Brimar tubes usually lack the...

45 GBP is a steal for that tube if you are using non-300B tubes (I hate the tube with the 300b). Not sure where you found them.

I have a lot of tubes, yet. Just bought a guys WE collection. That said, I have recently got rid of some of my lesser tubes. That said, yes, I still have tons of tubes. Thankfully not all for the...

I got one of the 422As today, so I don't know, but I heard no real difference between the black plate and the gray plates. There is no discernable difference among the 274Bs. They are, however,...

I prefer the 275A/5R4GY combo. For my WE 300Bs, I prefer the 422A/274B I have. The 5R4GY just cleaned up a bit of compression I perceived in the music. Then, swapping to the 300Bs, it was not a...

I am in Brooklyn and have a similar rig as to what was used at CAF this year.

Shawn

I don't know why I hate the look of thoriated tungsten filaments. The amps are beautiful.

I have my GG hooked up to my 1625 tube based amps. The Wells Audio distributor may want to come over with a potential customer to demo the Wells Audio amp on my speakers for a buyer (who also is...

They were PX25s and they died horrifically. They were under warranty, but the warranty was not honored and the contact attempts got me no responses.

I have a long memory and will have real issues ever buying KR again.