12au7 tube?

They hide this in the FAQ on their site:

We want to give you the vacuum tubes you need. To achieve that, we work with multiple contract manufacturers across Asia and Eastern Europe. Because no manufacturer covers the entire range, each manufacturer specializes in different types of tubes. No matter where the tubes are made, each one goes through the same strict quality control process.

You have to go to Support, then hit FAQ.

Also this bit of dubious ’technology’:

Magic Coating is a monocrystalline carbon coating that improves sound quality. It cools the tubes, blocks unwanted noise, and speeds up electron transmission for a cleaner sound.

How it can do that when it’s coating the glass is beyond me.

Gotta admit, they have a good marketing department.

They also explain why their tubes are better than all NOS tubes which to me is a blanket statement of nonsense.

Sophia Electric 12au7

I have been using this company's EL34's in my Primaluna EVO 400's and like them very much. Has anyone here ever tried their 12au7's?

Rays select around $180 a pair are very respectable  sounding and come with a 

1 year warranty.

For $180 you can get a NOS matched pair of Mullards or RCA black plates, and probably other brands too, I just didn't look.

"For $180 you can get a NOS matched pair of Mullards” or pretending to be, more likely..