As far as 9pin tubes for Ember or Solstice the Amperex Bugle Boys are my favorite the Orange Globes 2nd. I never liked the German or British tubes as much as some members here. To my ears they lack the resolving detail of the Amps. As far as American 9pin 6 or 12v as a general impression I have found Sylvania tubes to be excellent and affordable. In their day they were known for quality tubes.
3/29/15 at 5:44am