(!!!) (#1 KT77 Gold Lion Matched Pair) KT77 Gold Lion by M-O Valve England NOS 1979 (111ma and 118ma) (Very Close Gm) (FREE SHIPPING)

$ 649.99

1 matched pair) KT77 Gold Lion black base by M-O Valve England NOS 1979 original boxes with test report sheets, overlapping double "O" getter halos

1 tube) 118ma Gm=13,100 (glass is tilted 3/16" in base) (on left)

1 tube) 111ma Gm=13,000






Good NOS Ma = 90-100ma

Good NOS Gm = 12,000

General Information

The KT77 is designed primarily for use under ultra-linear conditions (43% taps, Class AB1 push-pull) and this connection is recommended. Similar performance can be obtained in the tetrode connected mode, but the output impedance (zout) will be higher. Life expectancy=5000 hours when operated at maximum
ratings (32W) or 10,000 hours when operated at (25W)

- Bob Gjika KT77 guitar amp

- upgrade from EL34


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