WIZARD / Firestone 6J5G(一對$800) 牌子不同,結構相同音質幼細豐富.
Two (2) 6J5G WIZARD and Firestone by KEN-RAD vintage vacuum tubes, ST shape, made in USA, tubes are black smooth plates, clear top, bottom side foil getter, printed base, tubes tests: 68, 72 % Tested on Triplett tube tester for shorts and leaks as well.
Scale 1-100, good quality percentage on my Triplett starts at 54.