Power Pentode
The Marshall EL34M / EL34 / 6CA7 Vacuum Tube is a glass octal
type pentode used in the output stages
of audio-frequency amplifiers. They are especially made for
Marshall amplifiers. It requires an octal
socket.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A
Preferred Substitutes ................. 6CA7, EL34