That's The 'Baby BEAN'.
It's a dual 12AU7 pre-amp, built by a mate of mine, who also built my The 'BEAN' 6x EL84 amp.
His name is Bean, so that is what I call them.
He's so clever. He got into re-building Phase Linears for a while too, and became most expert on them, but then realised there's lots better out there, including his own designs. So even though he's kept all his PL's, he never uses them.
It's a privilege to own some of his work.
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)