Power Pentode
The Valve Art 6550A vacuum Tube is a glass octal type used
in the output stages of high-fidelity audio amplifiers.
It requires an octal socket.
Valve Art tubes do not last as long as NOS General
Electric tubes. But the price is much lower as well.
Electrical Data:
Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.6 A