Power Pentode
The International Servicemasters 6CA7 / EL34 Vacuum Tube is a
glass octal type pentode used in the output stages of
audio-frequency amplifiers. They require an octal socket.
These tubes come from a bulk pack.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.5 A
Preferred Substitutes ...................... 6CA7,
EL34