Comments on Profile Post by Woland

These are early 1960s 6n3p-e's. Similar to 2c51 / WE396a's. I run many 6n3p's in my MJ2. But these early ones start up differently with a very loud hum. They also have a second hum after the muting relay disengages, and create clicking in headphones.

https://www.dailymotion.com/video/x83z0dj password: SBAF

While these are the first tubes I have truly loved, I am also worried they're going to kill my amp or headphones.

Compared to later 6n3p-e's, the internal construction is a little different with more glowing heater element exposed.

Probably oscilating like mad if the amp wasn't built with it in mind. Only a scope would tell you more.

I don't think 2c51 is compatible without a proper adapter?

They're in adapters, @Gazny ! Thats why they're so tall in the video.