1x VintageNOS Rare 3Mica 6414 GE USA AudiophileTube /0528 12at7 12av7 5965 7062
+ these are taller tubes w/ gain in-between 12au7/12at7, and similar to 12av7 ( 6414 0528 12at7 12av7 5965 7062). this ensures a thorough break-in, opens up sonically, all w/ no muted qualities leftover.