KT66 GEC early Old logo brown base smoked glass full cup getter CV1075 EL37 6L6G mathced quartet
KT66 GEC early logo boxed £ 850 quartet
Description
The KT66 is a tetrode having an anode dissipation of 25 W.
It may be used as an audio amplifiers or an oscillator and radio frequency amplifier
As an audio amplifier up to 50W may be obtained from two valves, tetrode connected. As a push-pull triode it has no equal for use in high quality equipment when an output of 14/15 watts is required.
The KT66 is very robust, both electrically and mechanically, once it is suitable for many industrial applications.
This section attempts to cover all KT66 made from the post WWII till the 1960s
Matched quartet KT66 GEC brown base, smoked glass with full cup getter!
The KT66 GEC you see here have early rectangular GEC logo
Codes MD PE PG MG. Mid 1950s valves with stunning sound like all KT66s.
When the KT66 was launched it was named the Finest Audio Tube ever made!
KT66 GEC early logo with smoked glass tested at 6.3 Volts filament
Anode and Screen 250 Volts
Negative grid – 15
Current 65mA
mA/V 6.3
Tested with AVO VCM 163 at: 77mA, 76mA, 76mA, 77mA 100% emission and working order
Supplied with original GEC boxes
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