Par a juego Genalex GOLD LION ECC81 12AT7 Amplitrex Super Platino - McIntosh
Factory burned in for 48 hours with balanced sections. Tubes are then matched for gm to 10% on an Amplitrex AT-1000 tester. This is a world class 12AT7, in the tradition of GENALEX GOLD LION. Notice the long plates.