Description
The KT77 GEC is a beam tetrode thermionic valve of the power pentode type. The KT77 was introduced later than the EL34 and has an octal base
Checking the GEC leaflet:
With HIFI enthusiasts demanding higher and higher standards of sound you can not afford poor quality valves!
That is why every GEC or Gold Lion valve survives an awesome series of tests before it reaches your equipment including testing under amplifier condition and being hit with a rubber hammer!
AudioMagical is proud to own a pair of KT77 GEC in excellent shape, neveer been used and in working order
KT77 GEC, same code on glass 7811 Z made at Hammersmith London UK
At −13.5 Grid and both Anode and Screen at 250 Volts each EL34 has been tested with AVO VCM 163 and got values of 98mA and 99mA and 100% emission
KT77 by GEC will be sold with original boxes
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