AX84 SEL? Anyone done one?

[Cygnus X1]

Any thoughts?
Soundclips?

I signed up over there, but, well, it's difficult to navigate for one thing.
And it seems people get tunnel vision, so to speak.

It is two ax7's, and a single KT88.
Single ended set up for plenty of gain, at low volume.
Other power tube options are supposed to be available,
but I haven't seen any plans with anything other than the KT88.

[Cygnus X1]

bump...

Anyone built either this, or the hi octane amps?
Still wanting to know how to sub in different power tube options besides the KT88.