Beam Power Pentode
The 1631 Vacuum tube is a metal type used in the output
stage of audio amplifying equipment, especially units
designed to have ample reserve of power-delivering
ability. It requires an octal socket. This tube, like
other power-handling tubes, should be adequately
ventilated.
Electrical Data
Heater Voltage ................................ 12.6 V
Heater Current ................................ 0.45 A