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(!!) (#1 KT77 PAIR) KT77 Gold Lion black base used/very good (7920=1979) (80ma and 82ma) (matched on Amplitrex)

$ 559.99

1 tube) KT77 Gold Lion black base (7920=1979) some scratches on the bases, top getters like new, low hours/test strong in Gold Lion boxes

1 tube) 82ma Gm=11,300

1 tube) 80ma Gm=11,900

Matched 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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