Terra Song/Dave Brinkley,out of Texas? There were many modifications to the Satori.Does it have the auto-bias and PAS caps in the output stage?
This is a very good pre with mm/mc phonostage.Mullards were the tube of choice for the unit-CV 4004s for the line and older 12ax s for phono.Sold mine when David left for the Middle-East.
Take a look at the First Sound Deluxe MKII.