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(!) (#3 KT77 SINGLE) KT77 Gold Lion black base used/like new (7920=1979) (90ma) (tested on Amplitrex)

$ 279.99

1 tube) KT77 Gold Lion black base (7920=1979) some scratches on the bases, good top getter used/tests like new in Gold Lion box

90ma

Gm=12,100

 

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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