1x NOS OO Getter 6L6GC General Electric USA Power Tube ~ Grail Audio KT66 EL37
Introduced back in 1959, the revered high power 6l6gc features improved plate dissipation over the original g/ga/gb series 6l6. tube1: 109 % gm (sold) tube2: 109 % gm ~ tube3: 109 % gm ~ tube 4: 109 % gm (65 % min good).