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(!!!) (#1 KT77 Gold Lion Matched Quad) KT77 Gold Lion by M-O Valve England NOS 1979 with test sheets (110-118ma) (free express mail shipping)

$ 1,649.99

1 matched quad) KT77 Gold Lion black base by M-O Valve England NOS 1979 original boxes with test report sheets

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

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

1 tube) 115ma Gm=13,000

1 tube) 110ma 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 impednace (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

 

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