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(!) (#3 KT77 Gold Lion single) KT77 Gold Lion by M-O Valve England like new - broken center guide pin 1979 (104ma) (tested on Amplitrex)

$ 259.99

1 tube) KT77 Gold Lion by M-O Valve England like new - broken center guide pin 1979

tube in very good overall condition, 2 small scratches on base

104ma

Gm=11,500

 

Tested on Amplitrex

Vplate=265V

Vscreen=250V

Vgrid=-13.5V

Good Ma range=80-100ma

Good Gm range 11,000-12,000


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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