Tube Question for Audiophriends

This tube is simply a high gm pentode (much like a 6922).
 https://frank.pocnet.net/sheets/009/e/E280F.pdf

From the genus white paper it is being used triode connected to drive a larger output tube. Nothing special going on here. Lets get used to the practice of a myriad of tubes showing up to make things fun and interesting. Gotcha !!!

It is a bit wimpy to drive an 813 but best of luck to get you attention and $$..

Thanks Ramtubes. Your conclusion may also be why the unit has so much shiny chrome and fancy tube-wrapping!

The first think I think about when buying a tube amp is how plentiful are replacements.   Those 813 s are scarce and no longer in production.