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Audio output beam tetrode with octal base II

A Pentode is an electronic valve with five electrodes. It is widely referred to as a three-grid amplifying valve. The additional grid is called the suppressor grid, and its role is to give a greater output signal; this is achieved from the plate of the Pentode when it is in operation;

Power pentodes are designed to operate at higher currents, higher temperatures and higher voltages than ordinary pentodes. A Pentodes has octal base. The most common power pentode are KT61 KT66 EL33 EL34 EL35 EL37 EL38 EL84 KT77 6L6G 350B 6V6G.

6L6G 6V6G 6V6GT 6AU6 etc

6L6G Brimar BVA orange print on glass British Valve Association coated glass Square getter KT66 equiv

Brimar BVA 6L6G smoked glass £ 250 quartet

6L6G Brimar BVA smoked glass made in England original boxes full tested and matched KT66 EL37 equivalent

Brimar 6L6G smoked glass £ 475 quartet

6L6G Brimar engraved base Cup getter Clear Smoked glass Holy Grail rare

Brimar smoked glass 6L6G cup getter £ 300 pair

Brimar/Arcturus clear glass 6L6G cup getter £ 250 pair

6L6G Brimar white letters on base BVA smoked glass made in England KT66 CV1075 equivalent

Brimar 6L6G white letters on base clean top 100% £ 400 quartet

6L6G Cossor Mullard CV1947 KB/K ribbed plate brown base with two large round getters HOLY GRAIL KT66 6L6G EL37 equivalent

Mullard CV1947 KB/K ribbed plate two large round getter £ 1,000 quartet

6L6G Mullard AMERTY holy grail smoked glass large D~Ring getter smoked glass MINT boxed KT66 EL37 equivalent

Mullard AMERTY smoked glass Full D-Getter £ 1,200 quartet

6L6G Mullard CV1075 KB/T KT66 Shouldered shape same shape L5 code on base

Mullard CV1075 KT66 6L6G shouldered shape £ 800 quartet

6L6G Mullard CV1947 KB/V Pink print on glass black base single round full getter ribbed plate Holy Grail KT66 CV1075 EL37 equivalent

Mullard CV1947 KB/V Pink print single round getter £ 1,200 quartet

6L6G National Union NU VT 115-A JAN-CNU Bar getter Holy Grail clear glass KT66 EL37 equivalent

National Union NU VT 115-A 6L6G large Bar getter £ 400 quartet