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(!!!!!) (~ Best KT77 Gold Lion Matched Pair ~) KT77 Gold Lion by M-O Valve England NOS 1979 (114ma and 115ma) (Highest Ma)

$ 728.88

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) 114ma Gm=12,300 (glass is tilted about 1/8" in base)

1 tube) 115ma Gm=13,000

 

 

Vplate=265V

Vscreen=250V

Vgrid=-13.5V

Good NOS Ma = 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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